The number 56428
56428 is a composite number with 6 divisors. Its prime factorisation is × 14107. Divisors (6): 1, 2, 4, 14107, 28214, 56428.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
56428 has no famous special property in the usual lists (prime, square, cube, triangular, Fibonacci, palindrome, perfect), but it is still a composite number.
- 2
56428 is composite. Its prime factorisation is
- 3
The divisors add up to 98756; without 56428 itself that is 42328, so 56428 is deficient (42328 is less than 56428). Euler's totient φ(56428) = 28212 numbers up to 56428 share no factor with it.
- 4
The digits of 56428 add up to 25, and repeating that until one digit is left gives the digital root 7. The Collatz sequence (halve if even, else 3n+1) takes 135 steps to reach 1.
LaTeX source of the formulas on this page
\[ 56428 = 2^{2} \times 14107 \]56428 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 6 |
| Sum of divisors | 98756 |
| Euler totient φ(n) | 28212 |
| Square | 3184119184 |
| Cube | 179673477314752 |
| Square root | 237.545785 (= 2√14107) |
| Digit sum / digital root | 25 / 7 |
| Collatz steps to 1 | 135 |
| Scientific notation | 5.6428 × |
56428 in other forms
| Form | Value |
|---|---|
| In words | fifty-six thousand four hundred and twenty-eight |
| Binary (base 2) | 1101110001101100 |
| Octal (base 8) | 156154 |
| Hexadecimal (base 16) | DC6C |
| Base 3 | 2212101221 |
| As time | 56428 seconds = 15 h 40 min 28 s |
Is 56428 divisible by 2 to 12?
| Divisor | Answer | Rule |
|---|---|---|
| 2 | Yes (56428 ÷ 2 = 28214) | A number is divisible by 2 if the last digit is even (0, 2, 4, 6, 8). |
| 3 | No (remainder 1) | A number is divisible by 3 if the digits add up to a multiple of 3. |
| 4 | Yes (56428 ÷ 4 = 14107) | A number is divisible by 4 if the last two digits make a multiple of 4. |
| 5 | No (remainder 3) | A number is divisible by 5 if the last digit is 0 or 5. |
| 6 | No (remainder 4) | A number is divisible by 6 if it is divisible by both 2 and 3. |
| 7 | No (remainder 1) | A number is divisible by 7 if double the last digit and subtract it from the rest: the result is a multiple of 7. |
| 8 | No (remainder 4) | A number is divisible by 8 if the last three digits make a multiple of 8. |
| 9 | No (remainder 7) | A number is divisible by 9 if the digits add up to a multiple of 9. |
| 10 | No (remainder 8) | A number is divisible by 10 if the last digit is 0. |
| 11 | No (remainder 9) | A number is divisible by 11 if the alternating sum of the digits is a multiple of 11. |
| 12 | No (remainder 4) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 56428 a prime number?
No. 56428 = × 14107, so it is divisible by 2.
What are the factors of 56428?
1, 2, 4, 14107, 28214, 56428.
What is 56428 in binary?
1101110001101100 (hexadecimal DC6C, octal 156154).
What is the square root of 56428?
About 237.5458, exactly 2√14107.
Is 56428 divisible by 3?
No. Its digits add up to 25, which is not a multiple of 3.
What is special about the number 56428?
It is a composite number with 6 divisors.