81749680 (number)
81749680 is an even 8-digits composite number following 81749679 and preceding 81749681. In scientific notation, it is written as 8.1749680 × 10^7. The sum of its digits is 43. It has a total of 7 prime factors and 40 positive divisors. There are 32626944 positive integers (up to 81749680) that are relatively prime to 81749680.
Interesting facts
- 81749680 has 40 divisors, whose sum is 190492272
- The reverse of 81749680 is 08694718
- Previous prime number is 613
Basic properties
- Is Prime? no
- Number parity even
- Number length 8
- Sum of Digits 43
- Digital Root 7
Name
Name | eighty-one million seven hundred forty-nine thousand six hundred eighty |
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Notation
Scientific notation | 8.1749680 × 10^7 |
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Engineering notation | 8.1749680 × 10^6 |
Prime Factorization of 81749680
Prime Factorization 2 × 2 × 2 × 2 × 5 × 613 × 1667
Composite numberω | Distinct Factors | 4 | Total number of distinct prime factors |
---|---|---|---|
Ω | Total Factors | 7 | Total number of prime factors |
rad | Radical | 10218710 | Product of the distinct prime numbers |
The prime factorization of 81749680 is 2 × 2 × 2 × 2 × 5 × 613 × 1667. Since it has a total of 7 prime factors.
Most popular turbo-numbers
Basic calculations (n = 81749680)
Multiplication
n×yn×2 | 163499360 |
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n×3 | 245249040 |
n×4 | 326998720 |
n×5 | 408748400 |
Division
n÷yn÷2 | 40874840 |
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n÷3 | 27249893.333333 |
n÷3 | 20437420 |
n÷5 | 16349936 |
Exponentiation
nyn2 | 6683010180102400 |
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n3 | 5.4633394366011E+23 |
n4 | 4.4662625067352E+31 |
n5 | 3.651155307216E+39 |
Nth Root
y√n2√n | 9041.5529639548 |
---|---|
3√n | 434.00562048969 |
4√n | 95.087080951909 |
5√n | 38.238179914495 |
Divisors of 81749680
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 | -81749679 | 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 81749680 can be divided by 40 positive divisors. The sum of these divisors (counting 81749680) is 1, the average is 0.025.
Base conversion 81749680
Base | System | Value |
---|---|---|
2 | Binary | 100110111110110011010110000 |
3 | Ternary | 12200211022110221 |
4 | Quaternary | 10313312122300 |
5 | Quinary | 131411442210 |
6 | Senary | 12040102424 |
8 | Octal | 467663260 |
10 | Decimal | 81749680 |
12 | Duodecimal | 23464a14 |
16 | Hexadecimal | 4df66b0 |
20 | Vigesimal | 15aie40 |
36 | Base36 | 1co6gg |
Cryptographic Hash Functions
md5 | 7395f4d39507ce87fe5182e8c1f91781 |
---|---|
sha1 | 1eb30dac4034a5079581bbee88cf5a94d44d5360 |
sha256 | b25ce78b1c26e41d93ecce06d4b1c8835425126f7dc38a27752c969d5908f7c8 |
sha512 | 388682f7d2a5a3cd39ee36ce125d5418c4ac1ba2f09283b4099b8e74098ae116777cb09fed5095a0c3b13ae05e5d3e583ce10c9e01ceee1e271ec95d65929727 |
ripemd-160 | 5a26dc91849de53be9b03f4b1c87902737024aad |
81749680 as geometric shapes
Circle
Radius = nDiameter | 163499360 |
---|---|
Circumference | 513648388.24263 |
Area | 2.0995295685676E+16 |
Sphere
Radius = nVolume | 2.2884782717458E+24 |
---|---|
Surface area | 8.3981182742702E+16 |
Circumference | 513648388.24263 |
Square
Length = nPerimeter | 326998720 |
---|---|
Area | 6683010180102400 |
Diagonal | 115611506.17566 |
Cube
Length = nSurface area | 40098061080614400 |
---|---|
Volume | 5.4633394366011E+23 |
Space diagonal | 141594599.2625 |
Equilateral Triangle
Length = nPerimeter | 245249040 |
---|---|
Area | 2.8938282948593E+15 |
Altitude | 70797299.631249 |
Triangular Pyramid
Length = nSurface area | 2.8938282948593E+15 |
---|---|
Volume | 6.4386072725743E+22 |
Height | 38537168.72522 |