638830 (number)
638,830 (six hundred thirtyeight thousand eight hundred thirty) is an even sixdigits composite number following 638829 and preceding 638831. In scientific notation, it is written as 6.3883 × 10^{5}. The sum of its digits is 28. It has a total of 4 prime factors and 16 positive divisors. There are 253,440 positive integers (up to 638830) that are relatively prime to 638830.
Basic properties
 Is Prime? No
 Number parity Even
 Number length 6
 Sum of Digits 28
 Digital Root 1
Name
Short name  638 thousand 830 

Full name  six hundred thirtyeight thousand eight hundred thirty 
Notation
Scientific notation  6.3883 × 10^{5} 

Engineering notation  638.83 × 10^{3} 
Prime Factorization of 638830
Prime Factorization 2 × 5 × 193 × 331
Composite numberω(n)  Distinct Factors  4  Total number of distinct prime factors 

Ω(n)  Total Factors  4  Total number of prime factors 
rad(n)  Radical  638830  Product of the distinct prime numbers 
λ(n)  Liouville Lambda  1  Returns the parity of Ω(n), such that λ(n) = (1)^{Ω(n)} 
μ(n)  Mobius Mu  1  Returns:

Λ(n)  Mangoldt function  0  Returns log(p) if n is a power p^{k} of any prime p (for any k >= 1), else returns 0 
The prime factorization of 638,830 is 2 × 5 × 193 × 331. Since it has a total of 4 prime factors, 638,830 is a composite number.
Divisors of 638830
16 divisors
τ(n)  Total Divisors  16  Total number of the positive divisors of n 

σ(n)  Sum of Divisors  1159344  Sum of all the positive divisors of n 
s(n)  Aliquot Sum  520514  Sum of the proper positive divisors of n 
A(n)  Arithmetic Mean  72459  Returns the sum of divisors (σ(n)) divided by the total number of divisors (τ(n)) 
G(n)  Geometric Mean  799.26841549007  Returns the nth root of the product of n divisors 
H(n)  Harmonic Mean  8.8164341213652  Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors 
The number 638,830 can be divided by 16 positive divisors (out of which 8 are even, and 8 are odd). The sum of these divisors (counting 638,830) is 1,159,344, the average is 72,459.
Other Arithmetic Functions (n = 638830)
φ(n)  Euler Totient  253440  Total number of positive integers not greater than n that are coprime to n 

λ(n)  Carmichael Lambda  10560  Smallest positive number such that a^{λ(n)} ≡ 1 (mod n) for all a coprime to n 
π(n)  Prime Pi  ≈ 51875  Total number of primes less than or equal to n 
r_{2}(n)  Sum of 2 squares  0  The number of ways n can be represented as the sum of 2 squares 
There are 253,440 positive integers (less than 638,830) that are coprime with 638,830. And there are approximately 51,875 prime numbers less than or equal to 638,830.
Divisibility of 638830
m  2  3  4  5  6  7  8  9 

n mod m  0  1  2  0  4  3  6  1 
The number 638,830 is divisible by 2 and 5.
Classification of 638830
By Arithmetic functions
 Arithmetic
 Deficient
Expressible via specific sums
 Polite
By Powers
 Square Free
Base conversion (638830)
Base  System  Value 

2  Binary  10011011111101101110 
3  Ternary  1012110022101 
4  Quaternary  2123331232 
5  Quinary  130420310 
6  Senary  21405314 
8  Octal  2337556 
10  Decimal  638830 
12  Duodecimal  26983a 
16  Hexadecimal  9bf6e 
20  Vigesimal  3jh1a 
36  Base36  doxa 
Basic calculations (n = 638830)
Multiplication
n×yn×2  1277660 

n×3  1916490 
n×4  2555320 
n×5  3194150 
Division
n÷yn÷2  319415.000 

n÷3  212943.333 
n÷4  159707.500 
n÷5  127766.000 
Exponentiation
n^{y}n^{2}  408103768900 

n^{3}  260708930686387000 
n^{4}  166548686190384607210000 
n^{5}  106396297199003398623964300000 
Nth Root
^{y}√n^{2}√n  799.26841549007 

^{3}√n  86.124841222236 
^{4}√n  28.271335580232 
^{5}√n  14.490289442417 
638830 as geometric shapes
Circle
Radius = nDiameter  1277660 

Circumference  4013887.2697855 
Area  1282095802278.5 
Sphere
Radius = nVolume  1.0920550151595E+18 

Surface area  5128383209114.2 
Circumference  4013887.2697855 
Square
Length = nPerimeter  2555320 

Area  408103768900 
Diagonal  903442.0500508 
Cube
Length = nSurface area  2448622613400 

Volume  260708930686387000 
Space diagonal  1106486.0173992 
Equilateral Triangle
Length = nPerimeter  1916490 

Area  176714115623.79 
Altitude  553243.00869961 
Triangular Pyramid
Length = nSurface area  706856462495.15 

Volume  3.072484213404E+16 
Height  521602.51079406 
Cryptographic Hash Functions
md5  c7882d76d212545db4f75b8fe6787142 

sha1  11b8d3e5613cf080976f135f0f54ab0f78a3bdd9 
sha256  05a5526ad424c140132d9fd680a251daf3eebf0bc8d2491387b442a69080f540 
sha512  c0a18bda44f525c459f8633aecf18bfbdd8cfaf7018b477a13ae6748e42e6b476677c486cae7a56def290facc566f9df012de12197e6e73d023e2c8d0f963fbf 
ripemd160  b89de6aaeb433e433e0dc60cbdc54ad720b5c3da 