81979968 (number)
81979968 is an even 8-digits composite number following 81979967 and preceding 81979969. In scientific notation, it is written as 8.1979968 × 10^7. The sum of its digits is 57. It has a total of 10 prime factors and 112 positive divisors. There are 23224320 positive integers (up to 81979968) that are relatively prime to 81979968.
Interesting facts
- 81979968 has 112 divisors, whose sum is 250001024
- The reverse of 81979968 is 86997918
- Previous prime number is 337
Basic properties
- Is Prime? no
- Number parity even
- Number length 8
- Sum of Digits 57
- Digital Root 3
Name
Name | eighty-one million nine hundred seventy-nine thousand nine hundred sixty-eight |
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Notation
Scientific notation | 8.1979968 × 10^7 |
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Engineering notation | 8.1979968 × 10^6 |
Prime Factorization of 81979968
Prime Factorization 2 × 2 × 2 × 2 × 2 × 2 × 3 × 7 × 337 × 181
Composite numberω | Distinct Factors | 5 | Total number of distinct prime factors |
---|---|---|---|
Ω | Total Factors | 10 | Total number of prime factors |
rad | Radical | 2561874 | Product of the distinct prime numbers |
The prime factorization of 81979968 is 2 × 2 × 2 × 2 × 2 × 2 × 3 × 7 × 337 × 181. Since it has a total of 10 prime factors.
Most popular turbo-numbers
Basic calculations (n = 81979968)
Multiplication
n×yn×2 | 163959936 |
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n×3 | 245939904 |
n×4 | 327919872 |
n×5 | 409899840 |
Division
n÷yn÷2 | 40989984 |
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n÷3 | 27326656 |
n÷3 | 20494992 |
n÷5 | 16395993.6 |
Exponentiation
nyn2 | 6720715153281024 |
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n3 | 5.5096401320309E+23 |
n4 | 4.5168012171541E+31 |
n5 | 3.7028721924466E+39 |
Nth Root
y√n2√n | 9054.2789884121 |
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3√n | 434.41276819438 |
4√n | 95.153975158225 |
5√n | 38.259698991711 |
Divisors of 81979968
112 divisors
τ | Total Divisors | 112 | Total number of the positive divisors of n |
---|---|---|---|
σ | Sum of Divisors | 1 | Sum of all the positive divisors of n |
s | Aliquot Sum | -81979967 | Sum of the proper positive divisors of n |
A | Arithmetic Mean | 0.0089285714285714 | 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 | 112 | Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors |
The number 81979968 can be divided by 112 positive divisors. The sum of these divisors (counting 81979968) is 1, the average is 0.0089285714285714.
Base conversion 81979968
Base | System | Value |
---|---|---|
2 | Binary | 100111000101110101001000000 |
3 | Ternary | 12201021000101010 |
4 | Quaternary | 10320232221000 |
5 | Quinary | 131441324333 |
6 | Senary | 12045040520 |
8 | Octal | 470565100 |
10 | Decimal | 81979968 |
12 | Duodecimal | 23556140 |
16 | Hexadecimal | 4e2ea40 |
20 | Vigesimal | 15c79i8 |
36 | Base36 | 1ct45c |
Cryptographic Hash Functions
md5 | 278d7c90d0c2c234b61f3f8c9b93f608 |
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sha1 | 696d9b25cde0f6ee97f24db9667229cb43f7b05b |
sha256 | 66e05357d05c2d2ff3ec77048c528b5b62965e52203b7c292226b53ae6f20eea |
sha512 | 8e8639e3ce216d1d929d3c3f69bfe5e247dea48b5524f66b34fd83f70faf80ea9184182fef2d666680ba0eb24cbcdf8b54d59c6265888ca0af357063030ae523 |
ripemd-160 | 230051bdfe2337c2577ad6e026e7fde256c0a72c |
81979968 as geometric shapes
Circle
Radius = nDiameter | 163959936 |
---|---|
Circumference | 515095330.42065 |
Area | 2.1113749352417E+16 |
Sphere
Radius = nVolume | 2.3078726616949E+24 |
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Surface area | 8.4454997409669E+16 |
Circumference | 515095330.42065 |
Square
Length = nPerimeter | 327919872 |
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Area | 6720715153281024 |
Diagonal | 115937182.58851 |
Cube
Length = nSurface area | 40324290919686144 |
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Volume | 5.5096401320309E+23 |
Space diagonal | 141993469.77887 |
Equilateral Triangle
Length = nPerimeter | 245939904 |
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Area | 2.9101550271702E+15 |
Altitude | 70996734.889435 |
Triangular Pyramid
Length = nSurface area | 2.9101550271702E+15 |
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Volume | 6.4931731654277E+22 |
Height | 38645727.529504 |