638993871 (number)

638993871 is an odd 9-digits composite number following 638993870 and preceding 638993872. In scientific notation, it is written as 6.38993871 × 10^8. The sum of its digits is 54. It has a total of 3 prime factors and 8 positive divisors. There are 425572560 positive integers (up to 638993871) that are relatively prime to 638993871.

Interesting facts

Basic properties

Name

Name six hundred thirty-eight million nine hundred ninety-three thousand eight hundred seventy-one

Notation

Scientific notation 6.38993871 × 10^8
Engineering notation 6.38993871 × 10^6

Prime Factorization of 638993871

Prime Factorization 9 × 1021 × 69539

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 3
Total number of prime factors
rad Radical 638993871
Product of the distinct prime numbers

The prime factorization of 638993871 is 9 × 1021 × 69539. Since it has a total of 3 prime factors.

Most popular turbo-numbers

4, 3, 52, 78, 752, 967, 6167, 4452, 72421, 80212, 515533, 476337, 7417304, 5568881, 56981706, 82348098, 364126565, 873881877, 6185775960, 2003833299

Basic calculations (n = 638993871)

Multiplication

n×y
n×2 1277987742
n×3 1916981613
n×4 2555975484
n×5 3194969355

Division

n÷y
n÷2 319496935.5
n÷3 212997957
n÷3 159748467.75
n÷5 127798774.2

Exponentiation

ny
n2 408313167175564641
n3 2.6090961127378E+26
n4 1.6671964248894E+35
n5 1.0653282972574E+44

Nth Root

y√n
2√n 25278.328089492
3√n 861.32204765616
4√n 158.99159754368
5√n 57.689840538167

Divisors of 638993871

1, 9, 1021, 9189, 69539, 625851, 70999319, 638993871

8 divisors

τ Total Divisors 8
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -638993870
Sum of the proper positive divisors of n
A Arithmetic Mean 0.125
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 8
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 638993871 can be divided by 8 positive divisors. The sum of these divisors (counting 638993871) is 1, the average is 0.125.

Base conversion 638993871

Base System Value
2 Binary 100110000101100100010111001111
3 Ternary 1122112101020210200
4 Quaternary 212011210113033
5 Quinary 2302040300441
6 Senary 143223504543
8 Octal 4605442717
10 Decimal 638993871
12 Duodecimal 159bb8153
16 Hexadecimal 261645cf
20 Vigesimal 9jde4db
36 Base36 akfutr

Cryptographic Hash Functions

md5 3263cda1b2b0bc0503f5b8898fcdeab6
sha1 3170e9b3fe0be10375bdc1d3c12c0ac6260963be
sha256 310be8b6bf179eabee67da1cd54cfde2caa68471de369925a1f6ceb49f997048
sha512 db433a53e7fe487cd9b9dc511b121417b75d46587c5bfdf7f190dfa02563dd4435862617508911c8fda923f7d35f9b326da94c89a11eae6950ba59b84cbe8bde
ripemd-160 09d6ec038d60536b144f7f0474db1f78d108f656

638993871 as geometric shapes

Circle

Radius = n
Diameter 1277987742
Circumference 4014916901.645
Area 1.2827536463627E+18

Sphere

Radius = n
Volume 1.0928956240383E+27
Surface area 5.1310145854509E+18
Circumference 4014916901.645

Square

Length = n
Perimeter 2555975484
Area 408313167175564641
Diagonal 903673798.64148

Cube

Length = n
Surface area 2449879003053387846
Volume 2.6090961127378E+26
Space diagonal 1106769850.2971

Equilateral Triangle

Length = n
Perimeter 1916981613
Area 1.7680478773686E+17
Altitude 553384925.14856

Triangular Pyramid

Length = n
Surface area 1.7680478773686E+17
Volume 3.0748492568073E+25
Height 301224599.54716