The number 24387
24387 is a composite number with 8 divisors. Its prime factorisation is 3 × 11 × 739. Divisors (8): 1, 3, 11, 33, 739, 2217, 8129, 24387.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
24387 has no famous special property in the usual lists (prime, square, cube, triangular, Fibonacci, palindrome, perfect), but it is still a composite number.
- 2
24387 is composite. Its prime factorisation is
- 3
The divisors add up to 35520; without 24387 itself that is 11133, so 24387 is deficient (11133 is less than 24387). Euler's totient φ(24387) = 14760 numbers up to 24387 share no factor with it.
- 4
The digits of 24387 add up to 24, and repeating that until one digit is left gives the digital root 6. The Collatz sequence (halve if even, else 3n+1) takes 69 steps to reach 1.
LaTeX source of the formulas on this page
\[ 24387 = 3 \times 11 \times 739 \]
24387 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 8 |
| Sum of divisors | 35520 |
| Euler totient φ(n) | 14760 |
| Square | 594725769 |
| Cube | 14503577328603 |
| Square root | 156.163376 |
| Digit sum / digital root | 24 / 6 |
| Collatz steps to 1 | 69 |
| Scientific notation | 2.4387 × |
24387 in other forms
| Form | Value |
|---|---|
| In words | twenty-four thousand three hundred and eighty-seven |
| Binary (base 2) | 101111101000011 |
| Octal (base 8) | 57503 |
| Hexadecimal (base 16) | 5F43 |
| Base 3 | 1020110020 |
| As time | 24387 seconds = 6 h 46 min 27 s |
Is 24387 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 (24387 ÷ 3 = 8129) | 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 2) | 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 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 3) | A number is divisible by 8 if the last three digits make a multiple of 8. |
| 9 | No (remainder 6) | A number is divisible by 9 if the digits add up to a multiple of 9. |
| 10 | No (remainder 7) | A number is divisible by 10 if the last digit is 0. |
| 11 | Yes (24387 ÷ 11 = 2217) | 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 24387 a prime number?
No. 24387 = 3 × 11 × 739, so it is divisible by 3.
What are the factors of 24387?
1, 3, 11, 33, 739, 2217, 8129, 24387.
What is 24387 in binary?
101111101000011 (hexadecimal 5F43, octal 57503).
What is the square root of 24387?
About 156.1634.
Is 24387 divisible by 3?
Yes. Its digits add up to 24, a multiple of 3.
What is special about the number 24387?
It is a composite number with 8 divisors.