638994915 (number)
638994915 is an odd 9-digits composite number following 638994914 and preceding 638994916. In scientific notation, it is written as 6.38994915 × 10^8. The sum of its digits is 54. It has a total of 5 prime factors and 32 positive divisors. There are 310003200 positive integers (up to 638994915) that are relatively prime to 638994915.
Interesting facts
- 638994915 has 32 divisors, whose sum is 763822080
- The reverse of 638994915 is 519499836
- Previous prime number is 73
Basic properties
- Is Prime? no
- Number parity odd
- Number length 9
- Sum of Digits 54
- Digital Root 9
Name
Name | six hundred thirty-eight million nine hundred ninety-four thousand nine hundred fifteen |
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Notation
Scientific notation | 6.38994915 × 10^8 |
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Engineering notation | 6.38994915 × 10^6 |
Prime Factorization of 638994915
Prime Factorization 15 × 39 × 13 × 73 × 1151
Composite numberω | Distinct Factors | 5 | Total number of distinct prime factors |
---|---|---|---|
Ω | Total Factors | 5 | Total number of prime factors |
rad | Radical | 638994915 | Product of the distinct prime numbers |
The prime factorization of 638994915 is 15 × 39 × 13 × 73 × 1151. Since it has a total of 5 prime factors.
Most popular turbo-numbers
Basic calculations (n = 638994915)
Multiplication
n×yn×2 | 1277989830 |
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n×3 | 1916984745 |
n×4 | 2555979660 |
n×5 | 3194974575 |
Division
n÷yn÷2 | 319497457.5 |
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n÷3 | 212998305 |
n÷3 | 159748728.75 |
n÷5 | 127798983 |
Exponentiation
nyn2 | 408314501395857225 |
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n3 | 2.6091089011271E+26 |
n4 | 1.6672073205015E+35 |
n5 | 1.0653370000512E+44 |
Nth Root
y√n2√n | 25278.348739583 |
---|---|
3√n | 861.3225167372 |
4√n | 158.99166248449 |
5√n | 57.6898593891 |
Divisors of 638994915
32 divisors
τ | Total Divisors | 32 | Total number of the positive divisors of n |
---|---|---|---|
σ | Sum of Divisors | 1 | Sum of all the positive divisors of n |
s | Aliquot Sum | -638994914 | Sum of the proper positive divisors of n |
A | Arithmetic Mean | 0.03125 | 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 | 32 | Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors |
The number 638994915 can be divided by 32 positive divisors. The sum of these divisors (counting 638994915) is 1, the average is 0.03125.
Base conversion 638994915
Base | System | Value |
---|---|---|
2 | Binary | 100110000101100100100111100011 |
3 | Ternary | 1122112101022020100 |
4 | Quaternary | 212011210213203 |
5 | Quinary | 2302040314130 |
6 | Senary | 143223513443 |
8 | Octal | 4605444743 |
10 | Decimal | 638994915 |
12 | Duodecimal | 159bb8883 |
16 | Hexadecimal | 261649e3 |
20 | Vigesimal | 9jde75f |
36 | Base36 | akfvmr |
Cryptographic Hash Functions
md5 | 9369d245ef6eec697d45ac4d7bf49d1e |
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sha1 | 34876a7418f970187ffd9dcc3eaaa1efdc8d21da |
sha256 | 1ca9df84c0d1fac0f0c18870300cc6a8e2df8aece22bf404c65bde4544100431 |
sha512 | d99c61a31f2a65540c68663c1cb333cc58dfd5d5478c4f48b2aa9d28a5b406d6aa29b8923023e3f25c50283c6e492aa7d4902eb8251938c39a7304c96e7c4ebe |
ripemd-160 | ff21c1bfd49a7583a9b414ffdbb8894cb2a833af |
638994915 as geometric shapes
Circle
Radius = nDiameter | 1277989830 |
---|---|
Circumference | 4014923461.2905 |
Area | 1.2827578379394E+18 |
Sphere
Radius = nVolume | 1.0929009808262E+27 |
---|---|
Surface area | 5.1310313517576E+18 |
Circumference | 4014923461.2905 |
Square
Length = nPerimeter | 2555979660 |
---|---|
Area | 408314501395857225 |
Diagonal | 903675275.08044 |
Cube
Length = nSurface area | 2449887008375143350 |
---|---|
Volume | 2.6091089011271E+26 |
Space diagonal | 1106771658.5582 |
Equilateral Triangle
Length = nPerimeter | 1916984745 |
---|---|
Area | 1.7680536547119E+17 |
Altitude | 553385829.27908 |
Triangular Pyramid
Length = nSurface area | 1.7680536547119E+17 |
---|---|
Volume | 3.0748643280686E+25 |
Height | 301225091.69348 |