The number 56749
56749 is a composite number with 12 divisors. Its prime factorisation is 7 × × 67. Divisors (12): 1, 7, 11, 67, 77, 121, 469, 737, 847, 5159, 8107, 56749.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
56749 has no famous special property in the usual lists (prime, square, cube, triangular, Fibonacci, palindrome, perfect), but it is still a composite number.
- 2
56749 is composite. Its prime factorisation is
- 3
The divisors add up to 72352; without 56749 itself that is 15603, so 56749 is deficient (15603 is less than 56749). Euler's totient φ(56749) = 43560 numbers up to 56749 share no factor with it.
- 4
The digits of 56749 add up to 31, and repeating that until one digit is left gives the digital root 4. The Collatz sequence (halve if even, else 3n+1) takes 104 steps to reach 1.
LaTeX source of the formulas on this page
\[ 56749 = 7 \times 11^{2} \times 67 \]56749 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 12 |
| Sum of divisors | 72352 |
| Euler totient φ(n) | 43560 |
| Square | 3220449001 |
| Cube | 182757260357749 |
| Square root | 238.220486 (= 11√469) |
| Digit sum / digital root | 31 / 4 |
| Collatz steps to 1 | 104 |
| Scientific notation | 5.6749 × |
56749 in other forms
| Form | Value |
|---|---|
| In words | fifty-six thousand seven hundred and forty-nine |
| Binary (base 2) | 1101110110101101 |
| Octal (base 8) | 156655 |
| Hexadecimal (base 16) | DDAD |
| Base 3 | 2212211211 |
| As time | 56749 seconds = 15 h 45 min 49 s |
Is 56749 divisible by 2 to 12?
| Divisor | Answer | Rule |
|---|---|---|
| 2 | No (remainder 1) | 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 | No (remainder 1) | A number is divisible by 4 if the last two digits make a multiple of 4. |
| 5 | No (remainder 4) | A number is divisible by 5 if the last digit is 0 or 5. |
| 6 | No (remainder 1) | A number is divisible by 6 if it is divisible by both 2 and 3. |
| 7 | Yes (56749 ÷ 7 = 8107) | 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 5) | A number is divisible by 8 if the last three digits make a multiple of 8. |
| 9 | No (remainder 4) | A number is divisible by 9 if the digits add up to a multiple of 9. |
| 10 | No (remainder 9) | A number is divisible by 10 if the last digit is 0. |
| 11 | Yes (56749 ÷ 11 = 5159) | A number is divisible by 11 if the alternating sum of the digits is a multiple of 11. |
| 12 | No (remainder 1) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 56749 a prime number?
No. 56749 = 7 × × 67, so it is divisible by 7.
What are the factors of 56749?
1, 7, 11, 67, 77, 121, 469, 737, 847, 5159, 8107, 56749.
What is 56749 in binary?
1101110110101101 (hexadecimal DDAD, octal 156655).
What is the square root of 56749?
About 238.2205, exactly 11√469.
Is 56749 divisible by 3?
No. Its digits add up to 31, which is not a multiple of 3.
What is special about the number 56749?
It is a composite number with 12 divisors.