81749232 (number)
81749232 is an even 8-digits composite number following 81749231 and preceding 81749233. In scientific notation, it is written as 8.1749232 × 10^7. The sum of its digits is 36. It has a total of 7 prime factors and 40 positive divisors. There are 26369280 positive integers (up to 81749232) that are relatively prime to 81749232.
Interesting facts
- 81749232 has 40 divisors, whose sum is 181674880
- The reverse of 81749232 is 23294718
- Previous prime number is 31
Basic properties
- Is Prime? no
- Number parity even
- Number length 8
- Sum of Digits 36
- Digital Root 9
Name
Name | eighty-one million seven hundred forty-nine thousand two hundred thirty-two |
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Notation
Scientific notation | 8.1749232 × 10^7 |
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Engineering notation | 8.1749232 × 10^6 |
Prime Factorization of 81749232
Prime Factorization 2 × 2 × 2 × 2 × 9 × 31 × 18313
Composite numberω | Distinct Factors | 4 | Total number of distinct prime factors |
---|---|---|---|
Ω | Total Factors | 7 | Total number of prime factors |
rad | Radical | 10218654 | Product of the distinct prime numbers |
The prime factorization of 81749232 is 2 × 2 × 2 × 2 × 9 × 31 × 18313. Since it has a total of 7 prime factors.
Most popular turbo-numbers
Basic calculations (n = 81749232)
Multiplication
n×yn×2 | 163498464 |
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n×3 | 245247696 |
n×4 | 326996928 |
n×5 | 408746160 |
Division
n÷yn÷2 | 40874616 |
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n÷3 | 27249744 |
n÷3 | 20437308 |
n÷5 | 16349846.4 |
Exponentiation
nyn2 | 6682936932589824 |
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n3 | 5.4632496174365E+23 |
n4 | 4.4661646044973E+31 |
n5 | 3.6510552640324E+39 |
Nth Root
y√n2√n | 9041.5281894158 |
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3√n | 434.00482768384 |
4√n | 95.086950678922 |
5√n | 38.238138004258 |
Divisors of 81749232
40 divisors
τ | Total Divisors | 40 | Total number of the positive divisors of n |
---|---|---|---|
σ | Sum of Divisors | 1 | Sum of all the positive divisors of n |
s | Aliquot Sum | -81749231 | Sum of the proper positive divisors of n |
A | Arithmetic Mean | 0.025 | 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 | 40 | Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors |
The number 81749232 can be divided by 40 positive divisors. The sum of these divisors (counting 81749232) is 1, the average is 0.025.
Base conversion 81749232
Base | System | Value |
---|---|---|
2 | Binary | 100110111110110010011110000 |
3 | Ternary | 12200211021212100 |
4 | Quaternary | 10313312103300 |
5 | Quinary | 131411433412 |
6 | Senary | 12040100400 |
8 | Octal | 467662360 |
10 | Decimal | 81749232 |
12 | Duodecimal | 23464700 |
16 | Hexadecimal | 4df64f0 |
20 | Vigesimal | 15aid1c |
36 | Base36 | 1co640 |
Cryptographic Hash Functions
md5 | 6152e637dcf3937b7ca8217273c40d9f |
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sha1 | f506e38495a125a4e5432dc695a2f43d0e1593c4 |
sha256 | 261fd569cb7c7ea97c31e98104c04d74e4bc2f7c274e4172849bd4f4de705e1b |
sha512 | d04aa1cff381b92616050dc4e87b3d93cc0bd186fb7b469a9c536e25f4fd1658af18aafec62834ede4d8de287325e8219c6a4138b46c2dc1c1da454ba5bdfcb2 |
ripemd-160 | 41d85301e30b5d72c71120cbbc2ca92976b27a50 |
81749232 as geometric shapes
Circle
Radius = nDiameter | 163498464 |
---|---|
Circumference | 513645573.37562 |
Area | 2.0995065571828E+16 |
Sphere
Radius = nVolume | 2.2884406483821E+24 |
---|---|
Surface area | 8.3980262287312E+16 |
Circumference | 513645573.37562 |
Square
Length = nPerimeter | 326996928 |
---|---|
Area | 6682936932589824 |
Diagonal | 115610872.60798 |
Cube
Length = nSurface area | 40097621595538944 |
---|---|
Volume | 5.4632496174365E+23 |
Space diagonal | 141593823.30374 |
Equilateral Triangle
Length = nPerimeter | 245247696 |
---|---|
Area | 2.893796577756E+15 |
Altitude | 70796911.651868 |
Triangular Pyramid
Length = nSurface area | 2.893796577756E+15 |
---|---|
Volume | 6.4385014196736E+22 |
Height | 38536957.535995 |