The number 24940
24940 is a composite number with 24 divisors. Its prime factorisation is × 5 × 29 × 43. Divisors (24): 1, 2, 4, 5, 10, 20, 29, 43, 58, 86, 116, 145, 172, 215, 290, 430 … 24940.
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How to work it out
- 1
24940 has no famous special property in the usual lists (prime, square, cube, triangular, Fibonacci, palindrome, perfect), but it is still a composite number.
- 2
24940 is composite. Its prime factorisation is
- 3
The divisors add up to 55440; without 24940 itself that is 30500, so 24940 is abundant (30500 is more than 24940). Euler's totient φ(24940) = 9408 numbers up to 24940 share no factor with it.
- 4
The digits of 24940 add up to 19, and repeating that until one digit is left gives the digital root 1. The Collatz sequence (halve if even, else 3n+1) takes 188 steps to reach 1.
LaTeX source of the formulas on this page
\[ 24940 = 2^{2} \times 5 \times 29 \times 43 \]24940 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 24 |
| Sum of divisors | 55440 |
| Euler totient φ(n) | 9408 |
| Square | 622003600 |
| Cube | 15512769784000 |
| Square root | 157.924032 (= 2√6235) |
| Digit sum / digital root | 19 / 1 |
| Collatz steps to 1 | 188 |
| Scientific notation | 2.494 × |
24940 in other forms
| Form | Value |
|---|---|
| In words | twenty-four thousand nine hundred and forty |
| Binary (base 2) | 110000101101100 |
| Octal (base 8) | 60554 |
| Hexadecimal (base 16) | 616C |
| Base 3 | 1021012201 |
| As time | 24940 seconds = 6 h 55 min 40 s |
Is 24940 divisible by 2 to 12?
| Divisor | Answer | Rule |
|---|---|---|
| 2 | Yes (24940 ÷ 2 = 12470) | 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 (24940 ÷ 4 = 6235) | A number is divisible by 4 if the last two digits make a multiple of 4. |
| 5 | Yes (24940 ÷ 5 = 4988) | 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 6) | 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 1) | A number is divisible by 9 if the digits add up to a multiple of 9. |
| 10 | Yes (24940 ÷ 10 = 2494) | A number is divisible by 10 if the last digit is 0. |
| 11 | No (remainder 3) | 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 24940 a prime number?
No. 24940 = × 5 × 29 × 43, so it is divisible by 2.
What are the factors of 24940?
1, 2, 4, 5, 10, 20, 29, 43, 58, 86, 116, 145, 172, 215, 290, 430, 580, 860, 1247, 2494, 4988, 6235, 12470, 24940.
What is 24940 in binary?
110000101101100 (hexadecimal 616C, octal 60554).
What is the square root of 24940?
About 157.9240, exactly 2√6235.
Is 24940 divisible by 3?
No. Its digits add up to 19, which is not a multiple of 3.
What is special about the number 24940?
It is a composite number with 24 divisors.