The number 24015
24015 is a composite number with 8 divisors. Its prime factorisation is 3 × 5 × 1601. Divisors (8): 1, 3, 5, 15, 1601, 4803, 8005, 24015.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
24015 has no famous special property in the usual lists (prime, square, cube, triangular, Fibonacci, palindrome, perfect), but it is still a composite number.
- 2
24015 is composite. Its prime factorisation is
- 3
The divisors add up to 38448; without 24015 itself that is 14433, so 24015 is deficient (14433 is less than 24015). Euler's totient φ(24015) = 12800 numbers up to 24015 share no factor with it.
- 4
The digits of 24015 add up to 12, and repeating that until one digit is left gives the digital root 3. The Collatz sequence (halve if even, else 3n+1) takes 69 steps to reach 1.
LaTeX source of the formulas on this page
\[ 24015 = 3 \times 5 \times 1601 \]
24015 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 8 |
| Sum of divisors | 38448 |
| Euler totient φ(n) | 12800 |
| Square | 576720225 |
| Cube | 13849936203375 |
| Square root | 154.967739 |
| Digit sum / digital root | 12 / 3 |
| Collatz steps to 1 | 69 |
| Scientific notation | 2.4015 × |
24015 in other forms
| Form | Value |
|---|---|
| In words | twenty-four thousand and fifteen |
| Binary (base 2) | 101110111001111 |
| Octal (base 8) | 56717 |
| Hexadecimal (base 16) | 5DCF |
| Base 3 | 1012221110 |
| As time | 24015 seconds = 6 h 40 min 15 s |
Is 24015 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 (24015 ÷ 3 = 8005) | 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 (24015 ÷ 5 = 4803) | 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 5) | 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 7) | A number is divisible by 8 if the last three digits make a multiple of 8. |
| 9 | No (remainder 3) | 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 2) | 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 24015 a prime number?
No. 24015 = 3 × 5 × 1601, so it is divisible by 3.
What are the factors of 24015?
1, 3, 5, 15, 1601, 4803, 8005, 24015.
What is 24015 in binary?
101110111001111 (hexadecimal 5DCF, octal 56717).
What is the square root of 24015?
About 154.9677.
Is 24015 divisible by 3?
Yes. Its digits add up to 12, a multiple of 3.
What is special about the number 24015?
It is a composite number with 8 divisors.