638691389 (number)

638691389 is an odd 9-digits composite number following 638691388 and preceding 638691390. In scientific notation, it is written as 6.38691389 × 10^8. The sum of its digits is 53. It has a total of 3 prime factors and 8 positive divisors. There are 528572016 positive integers (up to 638691389) that are relatively prime to 638691389.

Interesting facts

Basic properties

Name

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

Notation

Scientific notation 6.38691389 × 10^8
Engineering notation 6.38691389 × 10^6

Prime Factorization of 638691389

Prime Factorization 7 × 29 × 3146263

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 3
Total number of prime factors
rad Radical 638691389
Product of the distinct prime numbers

The prime factorization of 638691389 is 7 × 29 × 3146263. Since it has a total of 3 prime factors.

Most popular turbo-numbers

Basic calculations (n = 638691389)

Multiplication

n×y
n×2 1277382778
n×3 1916074167
n×4 2554765556
n×5 3193456945

Division

n÷y
n÷2 319345694.5
n÷3 212897129.66667
n÷3 159672847.25
n÷5 127738277.8

Exponentiation

ny
n2 407926690382749321
n3 2.6053926449073E+26
n4 1.6640418472662E+35
n5 1.0628091987846E+44

Nth Root

y√n
2√n 25272.344351089
3√n 861.18611753843
4√n 158.97277864807
5√n 57.684377749166

Divisors of 638691389

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 -638691388
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 638691389 can be divided by 8 positive divisors. The sum of these divisors (counting 638691389) is 1, the average is 0.125.

Base conversion 638691389

Base System Value
2 Binary 100110000100011010100000111101
3 Ternary 1122111210212212122
4 Quaternary 212010122200331
5 Quinary 2302001111024
6 Senary 143213212325
8 Octal 4604324075
10 Decimal 638691389
12 Duodecimal 159a910a5
16 Hexadecimal 2611a83d
20 Vigesimal 9jbg899
36 Base36 ak9dfh

Cryptographic Hash Functions

md5 71dcba5acf880ab612df67b914464025
sha1 ece9e9efe5242ece41e6319bd8b49e0bb92793a9
sha256 070ab9d772c522bcb8667d0f7efda07e526c96dd13531bdf18174527044e0a68
sha512 72d46b3885b98aa6930295dedc886090cb5f2d42c789e52c118f1018b49a7a68cde1d51ec5d62715e68445be86b15e206fac28343e474ec0ed6c4beff1f3f926
ripemd-160 87bfdf6f56dbc9c9efde5489c6c77b44a74fc6a6

638691389 as geometric shapes

Circle

Radius = n
Diameter 1277382778
Circumference 4013016351.1869
Area 1.2815394937096E+18

Sphere

Radius = n
Volume 1.091344319061E+27
Surface area 5.1261579748386E+18
Circumference 4013016351.1869

Square

Length = n
Perimeter 2554765556
Area 407926690382749321
Diagonal 903246024.49471

Cube

Length = n
Surface area 2447560142296495926
Volume 2.6053926449073E+26
Space diagonal 1106245936.1047

Equilateral Triangle

Length = n
Perimeter 1916074167
Area 1.7663743837659E+17
Altitude 553122968.05237

Triangular Pyramid

Length = n
Surface area 1.7663743837659E+17
Volume 3.0704846781125E+25
Height 301082008.1649