The number 24986
24986 is a composite number with 12 divisors. Its prime factorisation is 2 × 13 × . Divisors (12): 1, 2, 13, 26, 31, 62, 403, 806, 961, 1922, 12493, 24986.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
24986 has no famous special property in the usual lists (prime, square, cube, triangular, Fibonacci, palindrome, perfect), but it is still a composite number.
- 2
24986 is composite. Its prime factorisation is
- 3
The divisors add up to 41706; without 24986 itself that is 16720, so 24986 is deficient (16720 is less than 24986). Euler's totient φ(24986) = 11160 numbers up to 24986 share no factor with it.
- 4
The digits of 24986 add up to 29, and repeating that until one digit is left gives the digital root 2. The Collatz sequence (halve if even, else 3n+1) takes 64 steps to reach 1.
LaTeX source of the formulas on this page
\[ 24986 = 2 \times 13 \times 31^{2} \]24986 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 12 |
| Sum of divisors | 41706 |
| Euler totient φ(n) | 11160 |
| Square | 624300196 |
| Cube | 15598764697256 |
| Square root | 158.069605 (= 31√26) |
| Digit sum / digital root | 29 / 2 |
| Collatz steps to 1 | 64 |
| Scientific notation | 2.4986 × |
24986 in other forms
| Form | Value |
|---|---|
| In words | twenty-four thousand nine hundred and eighty-six |
| Binary (base 2) | 110000110011010 |
| Octal (base 8) | 60632 |
| Hexadecimal (base 16) | 619A |
| Base 3 | 1021021102 |
| As time | 24986 seconds = 6 h 56 min 26 s |
Is 24986 divisible by 2 to 12?
| Divisor | Answer | Rule |
|---|---|---|
| 2 | Yes (24986 ÷ 2 = 12493) | A number is divisible by 2 if the last digit is even (0, 2, 4, 6, 8). |
| 3 | No (remainder 2) | A number is divisible by 3 if the digits add up to a multiple of 3. |
| 4 | No (remainder 2) | A number is divisible by 4 if the last two digits make a multiple of 4. |
| 5 | No (remainder 1) | A number is divisible by 5 if the last digit is 0 or 5. |
| 6 | No (remainder 2) | A number is divisible by 6 if it is divisible by both 2 and 3. |
| 7 | No (remainder 3) | 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 2) | A number is divisible by 8 if the last three digits make a multiple of 8. |
| 9 | No (remainder 2) | A number is divisible by 9 if the digits add up to a multiple of 9. |
| 10 | No (remainder 6) | A number is divisible by 10 if the last digit is 0. |
| 11 | No (remainder 5) | A number is divisible by 11 if the alternating sum of the digits is a multiple of 11. |
| 12 | No (remainder 2) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 24986 a prime number?
No. 24986 = 2 × 13 × , so it is divisible by 2.
What are the factors of 24986?
1, 2, 13, 26, 31, 62, 403, 806, 961, 1922, 12493, 24986.
What is 24986 in binary?
110000110011010 (hexadecimal 619A, octal 60632).
What is the square root of 24986?
About 158.0696, exactly 31√26.
Is 24986 divisible by 3?
No. Its digits add up to 29, which is not a multiple of 3.
What is special about the number 24986?
It is a composite number with 12 divisors.