81409428 (number)
81409428 is an even 8-digits composite number following 81409427 and preceding 81409429. In scientific notation, it is written as 8.1409428 × 10^7. The sum of its digits is 36. It has a total of 6 prime factors and 48 positive divisors. There are 26949024 positive integers (up to 81409428) that are relatively prime to 81409428.
Interesting facts
- 81409428 has 48 divisors, whose sum is 212520000
- The reverse of 81409428 is 82490418
- Previous prime number is 149
Basic properties
- Is Prime? no
- Number parity even
- Number length 8
- Sum of Digits 36
- Digital Root 9
Name
Name | eighty-one million four hundred nine thousand four hundred twenty-eight |
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Notation
Scientific notation | 8.1409428 × 10^7 |
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Engineering notation | 8.1409428 × 10^6 |
Prime Factorization of 81409428
Prime Factorization 2 × 2 × 3 × 9 × 149 × 5059
Composite numberω | Distinct Factors | 5 | Total number of distinct prime factors |
---|---|---|---|
Ω | Total Factors | 6 | Total number of prime factors |
rad | Radical | 40704714 | Product of the distinct prime numbers |
The prime factorization of 81409428 is 2 × 2 × 3 × 9 × 149 × 5059. Since it has a total of 6 prime factors.
Most popular turbo-numbers
Basic calculations (n = 81409428)
Multiplication
n×yn×2 | 162818856 |
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n×3 | 244228284 |
n×4 | 325637712 |
n×5 | 407047140 |
Division
n÷yn÷2 | 40704714 |
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n÷3 | 27136476 |
n÷3 | 20352357 |
n÷5 | 16281885.6 |
Exponentiation
nyn2 | 6627494967287184 |
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n3 | 5.3954057435973E+23 |
n4 | 4.3923689541417E+31 |
n5 | 3.5758024412163E+39 |
Nth Root
y√n2√n | 9022.7173290534 |
---|---|
3√n | 433.40265531339 |
4√n | 94.987985182619 |
5√n | 38.206296408298 |
Divisors of 81409428
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 | -81409427 | 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 81409428 can be divided by 48 positive divisors. The sum of these divisors (counting 81409428) is 1, the average is 0.020833333333333.
Base conversion 81409428
Base | System | Value |
---|---|---|
2 | Binary | 100110110100011010110010100 |
3 | Ternary | 12200012000202000 |
4 | Quaternary | 10312203112110 |
5 | Quinary | 131320100203 |
6 | Senary | 12024515300 |
8 | Octal | 466432624 |
10 | Decimal | 81409428 |
12 | Duodecimal | 2331bb30 |
16 | Hexadecimal | 4da3594 |
20 | Vigesimal | 158g3b8 |
36 | Base36 | 1cgvx0 |
Cryptographic Hash Functions
md5 | 47c7cddb54a626da8e9d8ceffb76acab |
---|---|
sha1 | 650d8d3393970470b88ef8e8bea70faf7b83aad7 |
sha256 | dd6dfe9085fcaa67914ea1b07fdb5a123895d4d026706369bc6fac3399ec7314 |
sha512 | bd3f62a037633ac592fd7c4dd4ddefb79763238428a5a8f8638d21b772032c8707934ddf8d155f9b727a62068d4bfcc4da31522e07c2768439061b2a01d216e5 |
ripemd-160 | b9479d3048d1c0b89392d5a8ccb6bd03444b5e99 |
81409428 as geometric shapes
Circle
Radius = nDiameter | 162818856 |
---|---|
Circumference | 511510521.87549 |
Area | 2.0820889500933E+16 |
Sphere
Radius = nVolume | 2.2600222729629E+24 |
---|---|
Surface area | 8.3283558003731E+16 |
Circumference | 511510521.87549 |
Square
Length = nPerimeter | 325637712 |
---|---|
Area | 6627494967287184 |
Diagonal | 115130317.18264 |
Cube
Length = nSurface area | 39764969803723104 |
---|---|
Volume | 5.3954057435973E+23 |
Space diagonal | 141005265.51112 |
Equilateral Triangle
Length = nPerimeter | 244228284 |
---|---|
Area | 2.8697895025621E+15 |
Altitude | 70502632.75556 |
Triangular Pyramid
Length = nSurface area | 2.8697895025621E+15 |
---|---|
Volume | 6.3585466475841E+22 |
Height | 38376772.394212 |