81640188 (number)
81640188 is an even 8-digits composite number following 81640187 and preceding 81640189. In scientific notation, it is written as 8.1640188 × 10^7. The sum of its digits is 36. It has a total of 9 prime factors and 216 positive divisors. There are 20445696 positive integers (up to 81640188) that are relatively prime to 81640188.
Interesting facts
- 81640188 has 216 divisors, whose sum is 268195200
- The reverse of 81640188 is 88104618
- Previous prime number is 19
Basic properties
- Is Prime? no
- Number parity even
- Number length 8
- Sum of Digits 36
- Digital Root 9
Name
Name | eighty-one million six hundred forty thousand one hundred eighty-eight |
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Notation
Scientific notation | 8.1640188 × 10^7 |
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Engineering notation | 8.1640188 × 10^6 |
Prime Factorization of 81640188
Prime Factorization 2 × 2 × 7 × 3 × 3 × 17 × 17 × 19 × 59
Composite numberω | Distinct Factors | 6 | Total number of distinct prime factors |
---|---|---|---|
Ω | Total Factors | 9 | Total number of prime factors |
rad | Radical | 800394 | Product of the distinct prime numbers |
The prime factorization of 81640188 is 2 × 2 × 7 × 3 × 3 × 17 × 17 × 19 × 59. Since it has a total of 9 prime factors.
Most popular turbo-numbers
Basic calculations (n = 81640188)
Multiplication
n×yn×2 | 163280376 |
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n×3 | 244920564 |
n×4 | 326560752 |
n×5 | 408200940 |
Division
n÷yn÷2 | 40820094 |
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n÷3 | 27213396 |
n÷3 | 20410047 |
n÷5 | 16328037.6 |
Exponentiation
nyn2 | 6665120296675344 |
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n3 | 5.4414167406319E+23 |
n4 | 4.4423828569154E+31 |
n5 | 3.6267697160655E+39 |
Nth Root
y√n2√n | 9035.4960018806 |
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3√n | 433.81177110836 |
4√n | 95.055226062961 |
5√n | 38.227931508302 |
Divisors of 81640188
216 divisors
τ | Total Divisors | 216 | Total number of the positive divisors of n |
---|---|---|---|
σ | Sum of Divisors | 1 | Sum of all the positive divisors of n |
s | Aliquot Sum | -81640187 | Sum of the proper positive divisors of n |
A | Arithmetic Mean | 0.0046296296296296 | 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 | 216 | Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors |
The number 81640188 can be divided by 216 positive divisors. The sum of these divisors (counting 81640188) is 1, the average is 0.0046296296296296.
Base conversion 81640188
Base | System | Value |
---|---|---|
2 | Binary | 100110111011011101011111100 |
3 | Ternary | 12200121202021200 |
4 | Quaternary | 10313123223330 |
5 | Quinary | 131344441223 |
6 | Senary | 12033455500 |
8 | Octal | 467335374 |
10 | Decimal | 81640188 |
12 | Duodecimal | 23411590 |
16 | Hexadecimal | 4ddbafc |
20 | Vigesimal | 15a5098 |
36 | Base36 | 1cltz0 |
Cryptographic Hash Functions
md5 | b61a0302dbd2c34e4aeaa3b35e29667f |
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sha1 | 997862c5e6d040ea47bc4fc73320988bfb749f03 |
sha256 | bfe6cd8cbccee382f981c8be2eef8feddea61aab1a607dd238b846e29b69d2c5 |
sha512 | 8388c0b1ed9afa4f3f37a4a71d715639ed3ae0dcf1bcb667f48ff26bf3279d826c51fa405715eb13d3798f9b8204ebfb14d822ed587a49cfcbe6444d76a3defb |
ripemd-160 | 8df3da90c5b38bf26992a6dffbfe4502a8c4ae43 |
81640188 as geometric shapes
Circle
Radius = nDiameter | 163280376 |
---|---|
Circumference | 512960429.71698 |
Area | 2.0939092959327E+16 |
Sphere
Radius = nVolume | 2.279295314332E+24 |
---|---|
Surface area | 8.375637183731E+16 |
Circumference | 512960429.71698 |
Square
Length = nPerimeter | 326560752 |
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Area | 6665120296675344 |
Diagonal | 115456661.10429 |
Cube
Length = nSurface area | 39990721780052064 |
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Volume | 5.4414167406319E+23 |
Space diagonal | 141404953.55547 |
Equilateral Triangle
Length = nPerimeter | 244920564 |
---|---|
Area | 2.8860817481001E+15 |
Altitude | 70702476.777737 |
Triangular Pyramid
Length = nSurface area | 2.8860817481001E+15 |
---|---|
Volume | 6.4127711276047E+22 |
Height | 38485553.70143 |