81379968 (number)
81379968 is an even 8-digits composite number following 81379967 and preceding 81379969. In scientific notation, it is written as 8.1379968 × 10^7. The sum of its digits is 51. It has a total of 9 prime factors and 32 positive divisors. There are 27126528 positive integers (up to 81379968) that are relatively prime to 81379968.
Interesting facts
- 81379968 has 32 divisors, whose sum is 216166560
- The reverse of 81379968 is 86997318
- Previous prime number is 3
Basic properties
- Is Prime? no
- Number parity even
- Number length 8
- Sum of Digits 51
- Digital Root 6
Name
Name | eighty-one million three hundred seventy-nine thousand nine hundred sixty-eight |
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Notation
Scientific notation | 8.1379968 × 10^7 |
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Engineering notation | 8.1379968 × 10^6 |
Prime Factorization of 81379968
Prime Factorization 2 × 2 × 2 × 2 × 2 × 2 × 2 × 3 × 211927
Composite numberω | Distinct Factors | 3 | Total number of distinct prime factors |
---|---|---|---|
Ω | Total Factors | 9 | Total number of prime factors |
rad | Radical | 1271562 | Product of the distinct prime numbers |
The prime factorization of 81379968 is 2 × 2 × 2 × 2 × 2 × 2 × 2 × 3 × 211927. Since it has a total of 9 prime factors.
Most popular turbo-numbers
Basic calculations (n = 81379968)
Multiplication
n×yn×2 | 162759936 |
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n×3 | 244139904 |
n×4 | 325519872 |
n×5 | 406899840 |
Division
n÷yn÷2 | 40689984 |
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n÷3 | 27126656 |
n÷3 | 20344992 |
n÷5 | 16275993.6 |
Exponentiation
nyn2 | 6622699191681024 |
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n3 | 5.3895504829263E+23 |
n4 | 4.3860144583492E+31 |
n5 | 3.56933716268E+39 |
Nth Root
y√n2√n | 9021.0846354527 |
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3√n | 433.35036987589 |
4√n | 94.979390582656 |
5√n | 38.203530830699 |
Divisors of 81379968
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 | -81379967 | 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 81379968 can be divided by 32 positive divisors. The sum of these divisors (counting 81379968) is 1, the average is 0.03125.
Base conversion 81379968
Base | System | Value |
---|---|---|
2 | Binary | 100110110011100001010000000 |
3 | Ternary | 12200010112022220 |
4 | Quaternary | 10312130022000 |
5 | Quinary | 131313124333 |
6 | Senary | 12024131040 |
8 | Octal | 466341200 |
10 | Decimal | 81379968 |
12 | Duodecimal | 23306a80 |
16 | Hexadecimal | 4d9c280 |
20 | Vigesimal | 158c9i8 |
36 | Base36 | 1cg96o |
Cryptographic Hash Functions
md5 | 3a2a1d307d95811f3131f81080b281ab |
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sha1 | 487d4abdf361504a4ef8e5b0143df2b9bac6486c |
sha256 | f83cc2e443b43331c66de8d7d54dfddb559e359ff9522c9809fe7c4ab05b32b5 |
sha512 | 517f8fb3b215696d1d64cb1d76030bc4bb83a590b97ee66781f2c55c1795115c533c63c7002016d7ed9efabb6c20506d4361b417598328f80f49430c07f564f5 |
ripemd-160 | 275d5e1f74e3b6de96ed1af74ee12467fce11c79 |
81379968 as geometric shapes
Circle
Radius = nDiameter | 162759936 |
---|---|
Circumference | 511325419.23634 |
Area | 2.080582312752E+16 |
Sphere
Radius = nVolume | 2.2575696271083E+24 |
---|---|
Surface area | 8.3223292510081E+16 |
Circumference | 511325419.23634 |
Square
Length = nPerimeter | 325519872 |
---|---|
Area | 6622699191681024 |
Diagonal | 115088654.45109 |
Cube
Length = nSurface area | 39736195150086144 |
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Volume | 5.3895504829263E+23 |
Space diagonal | 140954239.29433 |
Equilateral Triangle
Length = nPerimeter | 244139904 |
---|---|
Area | 2.8677128708092E+15 |
Altitude | 70477119.647165 |
Triangular Pyramid
Length = nSurface area | 2.8677128708092E+15 |
---|---|
Volume | 6.3516461567073E+22 |
Height | 38362884.817029 |