638856987 (number)

638856987 is an odd 9-digits composite number following 638856986 and preceding 638856988. In scientific notation, it is written as 6.38856987 × 10^8. The sum of its digits is 60. It has a total of 2 prime factors and 4 positive divisors. There are 425904656 positive integers (up to 638856987) that are relatively prime to 638856987.

Interesting facts

Basic properties

Name

Name six hundred thirty-eight million eight hundred fifty-six thousand nine hundred eighty-seven

Notation

Scientific notation 6.38856987 × 10^8
Engineering notation 6.38856987 × 10^6

Prime Factorization of 638856987

Prime Factorization 3 × 212952329

Composite number
ω Distinct Factors 2
Total number of distinct prime factors
Ω Total Factors 2
Total number of prime factors
rad Radical 638856987
Product of the distinct prime numbers

The prime factorization of 638856987 is 3 × 212952329. Since it has a total of 2 prime factors.

Most popular turbo-numbers

10, 6, 27, 98, 313, 163, 4508, 7702, 65209, 70516, 667204, 859810, 8057884, 801335, 62814586, 85060027, 164599291, 715548564, 9837438586, 4866683817

Basic calculations (n = 638856987)

Multiplication

n×y
n×2 1277713974
n×3 1916570961
n×4 2555427948
n×5 3194284935

Division

n÷y
n÷2 319428493.5
n÷3 212952329
n÷3 159714246.75
n÷5 127771397.4

Exponentiation

ny
n2 408138249838718169
n3 2.6074197257142E+26
n4 1.6657683098141E+35
n5 1.0641877234479E+44

Nth Root

y√n
2√n 25275.620407816
3√n 861.26053969687
4√n 158.9830821434
5√n 57.687368685702

Divisors of 638856987

1, 3, 212952329, 638856987

4 divisors

τ Total Divisors 4
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -638856986
Sum of the proper positive divisors of n
A Arithmetic Mean 0.25
Returns the sum of divisors (σ(n)) divided by the total number of divisors (τ(n))
G Geometric Mean 1
Returns the nth root of the product of n divisors
H Harmonic Mean 4
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 638856987 can be divided by 4 positive divisors. The sum of these divisors (counting 638856987) is 1, the average is 0.25.

Base conversion 638856987

Base System Value
2 Binary 100110000101000010111100011011
3 Ternary 1122112010022000220
4 Quaternary 212011002330123
5 Quinary 2302021410422
6 Senary 143220531123
8 Octal 4605027433
10 Decimal 638856987
12 Duodecimal 159b50aa3
16 Hexadecimal 26142f1b
20 Vigesimal 9jch297
36 Base36 akcx7f

Cryptographic Hash Functions

md5 28d70156db2bb70e27f5099c7ef3734a
sha1 7f5d85b2774d7168c993d7e23871724ac900a35d
sha256 b93809f6b9bda5e5f8c80112dcca36f697e08468e779d41bb9ab2383019c4841
sha512 c0257f1583f6f5c52ddd44f2aa2fa52e8c424a08a7346a3a46251df526c149f8bd531d8da5730c7def32cde03ec956d51842b808ea78df11db47d76f62e69e25
ripemd-160 b0acaa2c2036f08467869caf90eb310096d70fcf

638856987 as geometric shapes

Circle

Radius = n
Diameter 1277713974
Circumference 4014056834.1074
Area 1.2822041273423E+18

Sphere

Radius = n
Volume 1.0921934206838E+27
Surface area 5.1288165093692E+18
Circumference 4014056834.1074

Square

Length = n
Perimeter 2555427948
Area 408138249838718169
Diagonal 903480215.43221

Cube

Length = n
Surface area 2448829499032309014
Volume 2.6074197257142E+26
Space diagonal 1106532760.2544

Equilateral Triangle

Length = n
Perimeter 1916570961
Area 1.7672904630822E+17
Altitude 553266380.12718

Triangular Pyramid

Length = n
Surface area 1.7672904630822E+17
Volume 3.0728736157534E+25
Height 301160071.81074