The number 24115
24115 is a composite number with 16 divisors. Its prime factorisation is 5 × 7 × 13 × 53. Divisors (16): 1, 5, 7, 13, 35, 53, 65, 91, 265, 371, 455, 689, 1855, 3445, 4823, 24115.
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How to work it out
- 1
What is special about 24115: a Harshad number: divisible by its digit sum 13.
- 2
24115 is composite. Its prime factorisation is
- 3
The divisors add up to 36288; without 24115 itself that is 12173, so 24115 is deficient (12173 is less than 24115). Euler's totient φ(24115) = 14976 numbers up to 24115 share no factor with it.
- 4
The digits of 24115 add up to 13, and repeating that until one digit is left gives the digital root 4. The Collatz sequence (halve if even, else 3n+1) takes 188 steps to reach 1.
LaTeX source of the formulas on this page
\[ 24115 = 5 \times 7 \times 13 \times 53 \]
24115 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 16 |
| Sum of divisors | 36288 |
| Euler totient φ(n) | 14976 |
| Square | 581533225 |
| Cube | 14023673720875 |
| Square root | 155.290051 |
| Digit sum / digital root | 13 / 4 |
| Collatz steps to 1 | 188 |
| Scientific notation | 2.4115 × |
24115 in other forms
| Form | Value |
|---|---|
| In words | twenty-four thousand one hundred and fifteen |
| Binary (base 2) | 101111000110011 |
| Octal (base 8) | 57063 |
| Hexadecimal (base 16) | 5E33 |
| Base 3 | 1020002011 |
| As time | 24115 seconds = 6 h 41 min 55 s |
Is 24115 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 | Yes (24115 ÷ 5 = 4823) | 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 | Yes (24115 ÷ 7 = 3445) | 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 5) | 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 7) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 24115 a prime number?
No. 24115 = 5 × 7 × 13 × 53, so it is divisible by 5.
What are the factors of 24115?
1, 5, 7, 13, 35, 53, 65, 91, 265, 371, 455, 689, 1855, 3445, 4823, 24115.
What is 24115 in binary?
101111000110011 (hexadecimal 5E33, octal 57063).
What is the square root of 24115?
About 155.2901.
Is 24115 divisible by 3?
No. Its digits add up to 13, which is not a multiple of 3.
What is special about the number 24115?
24115 is a Harshad number: divisible by its digit sum 13.