The number 24979
24979 is a twin prime (24977 and 24979 are both prime) and the 2761st prime number. Its only divisors are 1 and 24979.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 24979: a twin prime (24977 and 24979 are both prime); the 2761st prime number.
- 2
24979 is prime, so its only factors are 1 and 24979. It is the 2761st prime; the next prime is 24989 and the one before is 24977.
- 3
The divisors add up to 24980; without 24979 itself that is 1, so 24979 is deficient (1 is less than 24979). Euler's totient φ(24979) = 24978 numbers up to 24979 share no factor with it.
- 4
The digits of 24979 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 64 steps to reach 1.
24979 at a glance
| Property | Value |
|---|---|
| Type | prime |
| Number of divisors | 2 |
| Sum of divisors | 24980 |
| Euler totient φ(n) | 24978 |
| Square | 623950441 |
| Cube | 15585658065739 |
| Square root | 158.047461 |
| Digit sum / digital root | 31 / 4 |
| Collatz steps to 1 | 64 |
| Scientific notation | 2.4979 × |
24979 in other forms
| Form | Value |
|---|---|
| In words | twenty-four thousand nine hundred and seventy-nine |
| Binary (base 2) | 110000110010011 |
| Octal (base 8) | 60623 |
| Hexadecimal (base 16) | 6193 |
| Base 3 | 1021021011 |
| As time | 24979 seconds = 6 h 56 min 19 s |
Is 24979 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 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 1) | 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 3) | 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 | No (remainder 9) | A number is divisible by 11 if the alternating sum of the digits is a multiple of 11. |
| 12 | No (remainder 7) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 24979 a prime number?
Yes. 24979 is divisible only by 1 and itself.
What are the factors of 24979?
1, 24979.
What is 24979 in binary?
110000110010011 (hexadecimal 6193, octal 60623).
What is the square root of 24979?
About 158.0475.
Is 24979 divisible by 3?
No. Its digits add up to 31, which is not a multiple of 3.
What is special about the number 24979?
24979 is a twin prime (24977 and 24979 are both prime); the 2761st prime number.