81408 (number)
81408 is an even 5-digits composite number following 81407 and preceding 81409. In scientific notation, it is written as 8.1408 × 10^4. The sum of its digits is 21. It has a total of 11 prime factors and 40 positive divisors. There are 26624 positive integers (up to 81408) that are relatively prime to 81408.
Interesting facts
- 81408 has 40 divisors, whose sum is 220968
- The reverse of 81408 is 80418
- Previous prime number is 3
Basic properties
- Is Prime? no
- Number parity even
- Number length 5
- Sum of Digits 21
- Digital Root 3
Name
| Name | eighty-one thousand four hundred eight |
|---|
Notation
| Scientific notation | 8.1408 × 10^4 |
|---|---|
| Engineering notation | 8.1408 × 10^3 |
Prime Factorization of 81408
Prime Factorization 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 3 × 53
Composite number| ω | Distinct Factors | 3 | Total number of distinct prime factors |
|---|---|---|---|
| Ω | Total Factors | 11 | Total number of prime factors |
| rad | Radical | 318 | Product of the distinct prime numbers |
The prime factorization of 81408 is 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 3 × 53. Since it has a total of 11 prime factors.
Most popular turbo-numbers
Basic calculations (n = 81408)
Multiplication
n×y| n×2 | 162816 |
|---|---|
| n×3 | 244224 |
| n×4 | 325632 |
| n×5 | 407040 |
Division
n÷y| n÷2 | 40704 |
|---|---|
| n÷3 | 27136 |
| n÷3 | 20352 |
| n÷5 | 16281.6 |
Exponentiation
ny| n2 | 6627262464 |
|---|---|
| n3 | 539512182669312 |
| n4 | 4.3920607766743E+19 |
| n5 | 3.575488837075E+24 |
Nth Root
y√n| 2√n | 285.32087200203 |
|---|---|
| 3√n | 43.340012119817 |
| 4√n | 16.891443751262 |
| 5√n | 9.5969540863004 |
Divisors of 81408
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 | -81407 | 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 81408 can be divided by 40 positive divisors. The sum of these divisors (counting 81408) is 1, the average is 0.025.
Base conversion 81408
| Base | System | Value |
|---|---|---|
| 2 | Binary | 10011111000000000 |
| 3 | Ternary | 11010200010 |
| 4 | Quaternary | 103320000 |
| 5 | Quinary | 10101113 |
| 6 | Senary | 1424520 |
| 8 | Octal | 237000 |
| 10 | Decimal | 81408 |
| 12 | Duodecimal | 3b140 |
| 16 | Hexadecimal | 13e00 |
| 20 | Vigesimal | a3a8 |
| 36 | Base36 | 1qtc |
Cryptographic Hash Functions
| md5 | b26fa8120d7151e603cdfac269239068 |
|---|---|
| sha1 | a2a09eaa44b12f79d1281e32522c35206ff0f857 |
| sha256 | 8603eb31a6a5a406612ebbc0fbdefe449e9c128b6947d6e3df1efd0861f77e99 |
| sha512 | 6e5fe3b00a9275c4ecc15b55943791ebe2b0f1de6a227d6e7d11252a4289ed7f91cfc917ed0b3bfa572bd0a4242517ae5b7627b3aca74689aa37ed413a33fa20 |
| ripemd-160 | 14eae8fac6ce70d9aa61d45f929bbd1e5ceb2158 |
81408 as geometric shapes
Circle
Radius = n| Diameter | 162816 |
|---|---|
| Circumference | 511501.54948688 |
| Area | 20820159070.314 |
Sphere
Radius = n| Volume | 2.2599033461281E+15 |
|---|---|
| Surface area | 83280636281.255 |
| Circumference | 511501.54948688 |
Square
Length = n| Perimeter | 325632 |
|---|---|
| Area | 6627262464 |
| Diagonal | 115128.29768567 |
Cube
Length = n| Surface area | 39763574784 |
|---|---|
| Volume | 539512182669312 |
| Space diagonal | 141002.79214257 |
Equilateral Triangle
Length = n| Perimeter | 244224 |
|---|---|
| Area | 2869688825.6855 |
| Altitude | 70501.396071284 |
Triangular Pyramid
Length = n| Surface area | 2869688825.6855 |
|---|---|
| Volume | 63582120483038 |
| Height | 38376.099228556 |