28138768 (number)
28138768 is an even 8-digits composite number following 28138767 and preceding 28138769. In scientific notation, it is written as 2.8138768 × 10^7. The sum of its digits is 43. It has a total of 7 prime factors and 40 positive divisors. There are 12002688 positive integers (up to 28138768) that are relatively prime to 28138768.
Interesting facts
- 28138768 has 40 divisors, whose sum is 62601152
- The reverse of 28138768 is 86783182
- Previous prime number is 277
Basic properties
- Is Prime? no
- Number parity even
- Number length 8
- Sum of Digits 43
- Digital Root 7
Name
| Name | twenty-eight million one hundred thirty-eight thousand seven hundred sixty-eight |
|---|
Notation
| Scientific notation | 2.8138768 × 10^7 |
|---|---|
| Engineering notation | 2.8138768 × 10^6 |
Prime Factorization of 28138768
Prime Factorization 2 × 2 × 2 × 2 × 7 × 277 × 907
Composite number| ω | Distinct Factors | 4 | Total number of distinct prime factors |
|---|---|---|---|
| Ω | Total Factors | 7 | Total number of prime factors |
| rad | Radical | 3517346 | Product of the distinct prime numbers |
The prime factorization of 28138768 is 2 × 2 × 2 × 2 × 7 × 277 × 907. Since it has a total of 7 prime factors.
Most popular turbo-numbers
Basic calculations (n = 28138768)
Multiplication
n×y| n×2 | 56277536 |
|---|---|
| n×3 | 84416304 |
| n×4 | 112555072 |
| n×5 | 140693840 |
Division
n÷y| n÷2 | 14069384 |
|---|---|
| n÷3 | 9379589.3333333 |
| n÷3 | 7034692 |
| n÷5 | 5627753.6 |
Exponentiation
ny| n2 | 791790264557824 |
|---|---|
| n3 | 2.2280002559051E+22 |
| n4 | 6.2693182304855E+29 |
| n5 | 1.764108912058E+37 |
Nth Root
y√n| 2√n | 5304.598759567 |
|---|---|
| 3√n | 304.15971524323 |
| 4√n | 72.832676454782 |
| 5√n | 30.893066249988 |
Divisors of 28138768
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 | -28138767 | 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 28138768 can be divided by 40 positive divisors. The sum of these divisors (counting 28138768) is 1, the average is 0.025.
Base conversion 28138768
| Base | System | Value |
|---|---|---|
| 2 | Binary | 1101011010101110100010000 |
| 3 | Ternary | 1221221121010121 |
| 4 | Quaternary | 1223111310100 |
| 5 | Quinary | 24200420033 |
| 6 | Senary | 2443040024 |
| 8 | Octal | 153256420 |
| 10 | Decimal | 28138768 |
| 12 | Duodecimal | 9510014 |
| 16 | Hexadecimal | 1ad5d10 |
| 20 | Vigesimal | 8fh6i8 |
| 36 | Base36 | gr40g |
Cryptographic Hash Functions
| md5 | 55fd50a23d08404dc55486f53101e38f |
|---|---|
| sha1 | e1b830148646f8255b7d9170649258fc829a6855 |
| sha256 | 9cf2980b16df4ebec4a214695162f8da7687cbeeb2acc1fa23b24015763ab961 |
| sha512 | c0e3d47a55fd19396ebf4910cc3ea2b7598be4ada63cc4ce243405ff99d3463b94223ac76f9add1f60bb9f65bd504ec35712d473cf5645860bc1f088dd06ebe9 |
| ripemd-160 | 0467d43d658fa2f6dc02fe64e40bdf2b0613064b |
28138768 as geometric shapes
Circle
Radius = n| Diameter | 56277536 |
|---|---|
| Circumference | 176801093.65974 |
| Area | 2.4874824783188E+15 |
Sphere
Radius = n| Volume | 9.332625648197E+22 |
|---|---|
| Surface area | 9.9499299132751E+15 |
| Circumference | 176801093.65974 |
Square
Length = n| Perimeter | 112555072 |
|---|---|
| Area | 791790264557824 |
| Diagonal | 39794227.33407 |
Cube
Length = n| Surface area | 4750741587346944 |
|---|---|
| Volume | 2.2280002559051E+22 |
| Space diagonal | 48737775.838393 |
Equilateral Triangle
Length = n| Perimeter | 84416304 |
|---|---|
| Area | 3.4285524178814E+14 |
| Altitude | 24368887.919197 |
Triangular Pyramid
Length = n| Surface area | 3.4285524178814E+14 |
|---|---|
| Volume | 2.6257234823931E+21 |
| Height | 13264742.44469 |