81124784 (number)
81124784 is an even 8-digits composite number following 81124783 and preceding 81124785. In scientific notation, it is written as 8.1124784 × 10^7. The sum of its digits is 35. It has a total of 7 prime factors and 40 positive divisors. There are 36960768 positive integers (up to 81124784) that are relatively prime to 81124784.
Interesting facts
- 81124784 has 40 divisors, whose sum is 171447360
- The reverse of 81124784 is 48742118
- Previous prime number is 79
Basic properties
- Is Prime? no
- Number parity even
- Number length 8
- Sum of Digits 35
- Digital Root 8
Name
Name | eighty-one million one hundred twenty-four thousand seven hundred eighty-four |
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Notation
Scientific notation | 8.1124784 × 10^7 |
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Engineering notation | 8.1124784 × 10^6 |
Prime Factorization of 81124784
Prime Factorization 2 × 2 × 2 × 2 × 13 × 79 × 4937
Composite numberω | Distinct Factors | 4 | Total number of distinct prime factors |
---|---|---|---|
Ω | Total Factors | 7 | Total number of prime factors |
rad | Radical | 10140598 | Product of the distinct prime numbers |
The prime factorization of 81124784 is 2 × 2 × 2 × 2 × 13 × 79 × 4937. Since it has a total of 7 prime factors.
Most popular turbo-numbers
Basic calculations (n = 81124784)
Multiplication
n×yn×2 | 162249568 |
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n×3 | 243374352 |
n×4 | 324499136 |
n×5 | 405623920 |
Division
n÷yn÷2 | 40562392 |
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n÷3 | 27041594.666667 |
n÷3 | 20281196 |
n÷5 | 16224956.8 |
Exponentiation
nyn2 | 6581230579046656 |
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n3 | 5.3390090917935E+23 |
n4 | 4.3312595934579E+31 |
n5 | 3.513724989672E+39 |
Nth Root
y√n2√n | 9006.9297765665 |
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3√n | 432.89694187294 |
4√n | 94.904845906658 |
5√n | 38.179541681931 |
Divisors of 81124784
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 | -81124783 | 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 81124784 can be divided by 40 positive divisors. The sum of these divisors (counting 81124784) is 1, the average is 0.025.
Base conversion 81124784
Base | System | Value |
---|---|---|
2 | Binary | 100110101011101110110110000 |
3 | Ternary | 12122122120021122 |
4 | Quaternary | 10311131312300 |
5 | Quinary | 131231443114 |
6 | Senary | 12014441412 |
8 | Octal | 465356660 |
10 | Decimal | 81124784 |
12 | Duodecimal | 23203268 |
16 | Hexadecimal | 4d5ddb0 |
20 | Vigesimal | 1570bj4 |
36 | Base36 | 1casa8 |
Cryptographic Hash Functions
md5 | 06b41ae0f22ea6322ae14668ec74bde9 |
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sha1 | 4cc7ff231d6bdc85e307a26bf16a4ddde9636aa3 |
sha256 | d7749546938c20ad9821609621cbfb5bf2dadaa1efcf65f5652650d087e02650 |
sha512 | d6be2b5872f63dd538a5ab42b50ba3f17ea97cc843ae69b0b9595f4bb5f3ff6084c17fc064b5f427928fb5c0e5c93435e7925e92f8e52286901e095d66e4d484 |
ripemd-160 | 437613811440944b57accc6b82f0f7addb333eb0 |
81124784 as geometric shapes
Circle
Radius = nDiameter | 162249568 |
---|---|
Circumference | 509722050.87692 |
Area | 2.0675545638713E+16 |
Sphere
Radius = nVolume | 2.236398898697E+24 |
---|---|
Surface area | 8.2702182554854E+16 |
Circumference | 509722050.87692 |
Square
Length = nPerimeter | 324499136 |
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Area | 6581230579046656 |
Diagonal | 114727769.77739 |
Cube
Length = nSurface area | 39487383474279936 |
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Volume | 5.3390090917935E+23 |
Space diagonal | 140512247.64105 |
Equilateral Triangle
Length = nPerimeter | 243374352 |
---|---|
Area | 2.8497564348087E+15 |
Altitude | 70256123.820525 |
Triangular Pyramid
Length = nSurface area | 2.8497564348087E+15 |
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Volume | 6.2920825560397E+22 |
Height | 38242589.925796 |