638691391 (number)

638691391 is an odd 9-digits composite number following 638691390 and preceding 638691392. In scientific notation, it is written as 6.38691391 × 10^8. The sum of its digits is 46. It has a total of 3 prime factors and 8 positive divisors. There are 582445344 positive integers (up to 638691391) that are relatively prime to 638691391.

Interesting facts

Basic properties

Name

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

Notation

Scientific notation 6.38691391 × 10^8
Engineering notation 6.38691391 × 10^6

Prime Factorization of 638691391

Prime Factorization 13 × 1079 × 45533

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 3
Total number of prime factors
rad Radical 638691391
Product of the distinct prime numbers

The prime factorization of 638691391 is 13 × 1079 × 45533. Since it has a total of 3 prime factors.

Most popular turbo-numbers

Basic calculations (n = 638691391)

Multiplication

n×y
n×2 1277382782
n×3 1916074173
n×4 2554765564
n×5 3193456955

Division

n÷y
n÷2 319345695.5
n÷3 212897130.33333
n÷3 159672847.75
n÷5 127738278.2

Exponentiation

ny
n2 407926692937514881
n3 2.6053926693829E+26
n4 1.6640418681094E+35
n5 1.062809215425E+44

Nth Root

y√n
2√n 25272.344390658
3√n 861.18611843733
4√n 158.97277877252
5√n 57.684377785293

Divisors of 638691391

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 -638691390
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 638691391 can be divided by 8 positive divisors. The sum of these divisors (counting 638691391) is 1, the average is 0.125.

Base conversion 638691391

Base System Value
2 Binary 100110000100011010100000111111
3 Ternary 1122111210212212201
4 Quaternary 212010122200333
5 Quinary 2302001111031
6 Senary 143213212331
8 Octal 4604324077
10 Decimal 638691391
12 Duodecimal 159a910a7
16 Hexadecimal 2611a83f
20 Vigesimal 9jbg89b
36 Base36 ak9dfj

Cryptographic Hash Functions

md5 cc03ce8221e0d28e5525ebe87d61f7f7
sha1 74f90a099f4ef97ede25dae52fe0c6d5fb418c4b
sha256 1d7fc73aa65878ad3ff7d0a8ecbdec68387ba5f66f132ac101082331478cce2e
sha512 3fa4946e3a2e4d2af174b8d20dee2f3877c588ee0be23bd32157b985eab5672657d66c60249ee0fbd473c7287726df6fc51a59f8d9112b9ec5ca604dcceed1b0
ripemd-160 a7dd1bf0f2761b673ade2bd7b7dc5aafaaaf2d66

638691391 as geometric shapes

Circle

Radius = n
Diameter 1277382782
Circumference 4013016363.7533
Area 1.2815395017357E+18

Sphere

Radius = n
Volume 1.0913443293133E+27
Surface area 5.1261580069427E+18
Circumference 4013016363.7533

Square

Length = n
Perimeter 2554765564
Area 407926692937514881
Diagonal 903246027.32314

Cube

Length = n
Surface area 2447560157625089286
Volume 2.6053926693829E+26
Space diagonal 1106245939.5688

Equilateral Triangle

Length = n
Perimeter 1916074173
Area 1.7663743948283E+17
Altitude 553122969.78442

Triangular Pyramid

Length = n
Surface area 1.7663743948283E+17
Volume 3.0704847069573E+25
Height 301082009.10771