638631728 (number)

638631728 is an even 9-digits composite number following 638631727 and preceding 638631729. In scientific notation, it is written as 6.38631728 × 10^8. The sum of its digits is 44. It has a total of 7 prime factors and 40 positive divisors. There are 273434112 positive integers (up to 638631728) that are relatively prime to 638631728.

Interesting facts

Basic properties

Name

Name six hundred thirty-eight million six hundred thirty-one thousand seven hundred twenty-eight

Notation

Scientific notation 6.38631728 × 10^8
Engineering notation 6.38631728 × 10^6

Prime Factorization of 638631728

Prime Factorization 2 × 2 × 2 × 2 × 7 × 1373 × 4153

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 7
Total number of prime factors
rad Radical 79828966
Product of the distinct prime numbers

The prime factorization of 638631728 is 2 × 2 × 2 × 2 × 7 × 1373 × 4153. Since it has a total of 7 prime factors.

Most popular turbo-numbers

Basic calculations (n = 638631728)

Multiplication

n×y
n×2 1277263456
n×3 1915895184
n×4 2554526912
n×5 3193158640

Division

n÷y
n÷2 319315864
n÷3 212877242.66667
n÷3 159657932
n÷5 127726345.6

Exponentiation

ny
n2 407850484008265984
n3 2.6046625936784E+26
n4 1.6634201730578E+35
n5 1.0623128995099E+44

Nth Root

y√n
2√n 25271.163962113
3√n 861.15930186201
4√n 158.9690660541
5√n 57.683300034227

Divisors of 638631728

40 divisors

τ Total Divisors 40
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -638631727
Sum of the proper positive divisors of n
A Arithmetic Mean 0.025
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 40
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 638631728 can be divided by 40 positive divisors. The sum of these divisors (counting 638631728) is 1, the average is 0.025.

Base conversion 638631728

Base System Value
2 Binary 100110000100001011111100110000
3 Ternary 1122111200212000222
4 Quaternary 212010023330300
5 Quinary 2301442203403
6 Senary 143212032212
8 Octal 4604137460
10 Decimal 638631728
12 Duodecimal 159a62668
16 Hexadecimal 2610bf30
20 Vigesimal 9jb8j68
36 Base36 ak83e8

Cryptographic Hash Functions

md5 d2cde4eeb8bb0e61f56ab39f7d2d88ae
sha1 d1aca94704652bd858086f1a016c776ca66e0b0b
sha256 424a474cc1490d4c13ab089e232cddb17ab3b492a5cea503e01bcecb98d62fab
sha512 e867f488c513164c906c58a16d54160d75f424168802a497e8324b3cb004ec3cebe0f637420c8b9fae68a051421bba51d41376f8c7bfda48eca1f7bd22be7dd0
ripemd-160 4800ba7f7558ee754e2480ef4efca67a9c4c4d04

638631728 as geometric shapes

Circle

Radius = n
Diameter 1277263456
Circumference 4012641490.0683
Area 1.2813000843234E+18

Sphere

Radius = n
Volume 1.0910385159173E+27
Surface area 5.1252003372936E+18
Circumference 4012641490.0683

Square

Length = n
Perimeter 2554526912
Area 407850484008265984
Diagonal 903161651.09937

Cube

Length = n
Surface area 2447102904049595904
Volume 2.6046625936784E+26
Space diagonal 1106142600.2215

Equilateral Triangle

Length = n
Perimeter 1915895184
Area 1.7660444004847E+17
Altitude 553071300.11075

Triangular Pyramid

Length = n
Surface area 1.7660444004847E+17
Volume 3.0696243044882E+25
Height 301053883.69979