81409916 (number)
81409916 is an even 8-digits composite number following 81409915 and preceding 81409917. In scientific notation, it is written as 8.1409916 × 10^7. The sum of its digits is 38. It has a total of 6 prime factors and 48 positive divisors. There are 33680448 positive integers (up to 81409916) that are relatively prime to 81409916.
Interesting facts
- 81409916 has 48 divisors, whose sum is 168537600
- The reverse of 81409916 is 61990418
- Previous prime number is 37
Basic properties
- Is Prime? no
- Number parity even
- Number length 8
- Sum of Digits 38
- Digital Root 2
Name
Name | eighty-one million four hundred nine thousand nine hundred sixteen |
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Notation
Scientific notation | 8.1409916 × 10^7 |
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Engineering notation | 8.1409916 × 10^6 |
Prime Factorization of 81409916
Prime Factorization 2 × 2 × 7 × 179 × 37 × 439
Composite numberω | Distinct Factors | 5 | Total number of distinct prime factors |
---|---|---|---|
Ω | Total Factors | 6 | Total number of prime factors |
rad | Radical | 40704958 | Product of the distinct prime numbers |
The prime factorization of 81409916 is 2 × 2 × 7 × 179 × 37 × 439. Since it has a total of 6 prime factors.
Most popular turbo-numbers
Basic calculations (n = 81409916)
Multiplication
n×yn×2 | 162819832 |
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n×3 | 244229748 |
n×4 | 325639664 |
n×5 | 407049580 |
Division
n÷yn÷2 | 40704958 |
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n÷3 | 27136638.666667 |
n÷3 | 20352479 |
n÷5 | 16281983.2 |
Exponentiation
nyn2 | 6627574423127056 |
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n3 | 5.3955027707052E+23 |
n4 | 4.3924742734088E+31 |
n5 | 3.5759096163037E+39 |
Nth Root
y√n2√n | 9022.7443718638 |
---|---|
3√n | 433.40352130675 |
4√n | 94.988127531096 |
5√n | 38.206342212889 |
Divisors of 81409916
48 divisors
τ | Total Divisors | 48 | Total number of the positive divisors of n |
---|---|---|---|
σ | Sum of Divisors | 1 | Sum of all the positive divisors of n |
s | Aliquot Sum | -81409915 | Sum of the proper positive divisors of n |
A | Arithmetic Mean | 0.020833333333333 | 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 | 48 | Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors |
The number 81409916 can be divided by 48 positive divisors. The sum of these divisors (counting 81409916) is 1, the average is 0.020833333333333.
Base conversion 81409916
Base | System | Value |
---|---|---|
2 | Binary | 100110110100011011101111100 |
3 | Ternary | 12200012001102002 |
4 | Quaternary | 10312203131330 |
5 | Quinary | 131320104131 |
6 | Senary | 12024521432 |
8 | Octal | 466433574 |
10 | Decimal | 81409916 |
12 | Duodecimal | 23320278 |
16 | Hexadecimal | 4da377c |
20 | Vigesimal | 158g4fg |
36 | Base36 | 1cgwak |
Cryptographic Hash Functions
md5 | c7f6c7347fc5e403c4b0c7d8aca37c32 |
---|---|
sha1 | 46faccd68f19a59749b78e094a870896acfa83b8 |
sha256 | e49b1b801e44c2605dd4161a0595a4e34122756dddebdd2b960df5205d12056f |
sha512 | 0315d36adce1a9ecab2b4d6a5813d84635267f4bb46f0f454f91b267862f6f91fd04d05e474c9580a1b3fd233e43495ceb831f85e15786c49fe82ddb1061274a |
ripemd-160 | 43aa0407d11ce2adbf7e6bf7ca6ebbd1f66cefde |
81409916 as geometric shapes
Circle
Radius = nDiameter | 162819832 |
---|---|
Circumference | 511513588.06992 |
Area | 2.0821139118816E+16 |
Sphere
Radius = nVolume | 2.2600629155828E+24 |
---|---|
Surface area | 8.3284556475262E+16 |
Circumference | 511513588.06992 |
Square
Length = nPerimeter | 325639664 |
---|---|
Area | 6627574423127056 |
Diagonal | 115131007.31885 |
Cube
Length = nSurface area | 39765446538762336 |
---|---|
Volume | 5.3955027707052E+23 |
Space diagonal | 141006110.75191 |
Equilateral Triangle
Length = nPerimeter | 244229748 |
---|---|
Area | 2.86982390795E+15 |
Altitude | 70503055.375957 |
Triangular Pyramid
Length = nSurface area | 2.86982390795E+15 |
---|---|
Volume | 6.3586609951274E+22 |
Height | 38377002.439618 |