The number 24489
24489 is a composite number with 8 divisors. Its prime factorisation is × 907. Divisors (8): 1, 3, 9, 27, 907, 2721, 8163, 24489.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 24489: a Harshad number: divisible by its digit sum 27.
- 2
24489 is composite. Its prime factorisation is
- 3
The divisors add up to 36320; without 24489 itself that is 11831, so 24489 is deficient (11831 is less than 24489). Euler's totient φ(24489) = 16308 numbers up to 24489 share no factor with it.
- 4
The digits of 24489 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 126 steps to reach 1.
LaTeX source of the formulas on this page
\[ 24489 = 3^{3} \times 907 \]24489 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 8 |
| Sum of divisors | 36320 |
| Euler totient φ(n) | 16308 |
| Square | 599711121 |
| Cube | 14686325642169 |
| Square root | 156.489616 (= 3√2721) |
| Digit sum / digital root | 27 / 9 |
| Collatz steps to 1 | 126 |
| Scientific notation | 2.4489 × |
24489 in other forms
| Form | Value |
|---|---|
| In words | twenty-four thousand four hundred and eighty-nine |
| Binary (base 2) | 101111110101001 |
| Octal (base 8) | 57651 |
| Hexadecimal (base 16) | 5FA9 |
| Base 3 | 1020121000 |
| As time | 24489 seconds = 6 h 48 min 9 s |
Is 24489 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 (24489 ÷ 3 = 8163) | A number is divisible by 3 if the digits add up to a multiple of 3. |
| 4 | No (remainder 1) | 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 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 1) | A number is divisible by 8 if the last three digits make a multiple of 8. |
| 9 | Yes (24489 ÷ 9 = 2721) | 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 3) | A number is divisible by 11 if the alternating sum of the digits is a multiple of 11. |
| 12 | No (remainder 9) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 24489 a prime number?
No. 24489 = × 907, so it is divisible by 3.
What are the factors of 24489?
1, 3, 9, 27, 907, 2721, 8163, 24489.
What is 24489 in binary?
101111110101001 (hexadecimal 5FA9, octal 57651).
What is the square root of 24489?
About 156.4896, exactly 3√2721.
Is 24489 divisible by 3?
Yes. Its digits add up to 27, a multiple of 3.
What is special about the number 24489?
24489 is a Harshad number: divisible by its digit sum 27.