The number 24939
24939 is a composite number with 12 divisors. Its prime factorisation is × 17 × 163. Divisors (12): 1, 3, 9, 17, 51, 153, 163, 489, 1467, 2771, 8313, 24939.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
24939 has no famous special property in the usual lists (prime, square, cube, triangular, Fibonacci, palindrome, perfect), but it is still a composite number.
- 2
24939 is composite. Its prime factorisation is
- 3
The divisors add up to 38376; without 24939 itself that is 13437, so 24939 is deficient (13437 is less than 24939). Euler's totient φ(24939) = 15552 numbers up to 24939 share no factor with it.
- 4
The digits of 24939 add up to 27, and repeating that until one digit is left gives the digital root 9. The Collatz sequence (halve if even, else 3n+1) takes 113 steps to reach 1.
LaTeX source of the formulas on this page
\[ 24939 = 3^{2} \times 17 \times 163 \]24939 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 12 |
| Sum of divisors | 38376 |
| Euler totient φ(n) | 15552 |
| Square | 621953721 |
| Cube | 15510903848019 |
| Square root | 157.920866 (= 3√2771) |
| Digit sum / digital root | 27 / 9 |
| Collatz steps to 1 | 113 |
| Scientific notation | 2.4939 × |
24939 in other forms
| Form | Value |
|---|---|
| In words | twenty-four thousand nine hundred and thirty-nine |
| Binary (base 2) | 110000101101011 |
| Octal (base 8) | 60553 |
| Hexadecimal (base 16) | 616B |
| Base 3 | 1021012200 |
| As time | 24939 seconds = 6 h 55 min 39 s |
Is 24939 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 | Yes (24939 ÷ 3 = 8313) | A number is divisible by 3 if the digits add up to a multiple of 3. |
| 4 | No (remainder 3) | 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 3) | A number is divisible by 6 if it is divisible by both 2 and 3. |
| 7 | No (remainder 5) | 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 3) | A number is divisible by 8 if the last three digits make a multiple of 8. |
| 9 | Yes (24939 ÷ 9 = 2771) | 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 | No (remainder 2) | A number is divisible by 11 if the alternating sum of the digits is a multiple of 11. |
| 12 | No (remainder 3) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 24939 a prime number?
No. 24939 = × 17 × 163, so it is divisible by 3.
What are the factors of 24939?
1, 3, 9, 17, 51, 153, 163, 489, 1467, 2771, 8313, 24939.
What is 24939 in binary?
110000101101011 (hexadecimal 616B, octal 60553).
What is the square root of 24939?
About 157.9209, exactly 3√2771.
Is 24939 divisible by 3?
Yes. Its digits add up to 27, a multiple of 3.
What is special about the number 24939?
It is a composite number with 12 divisors.