The number 24490
24490 is a composite number with 16 divisors. Its prime factorisation is 2 × 5 × 31 × 79. Divisors (16): 1, 2, 5, 10, 31, 62, 79, 155, 158, 310, 395, 790, 2449, 4898, 12245, 24490.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
24490 has no famous special property in the usual lists (prime, square, cube, triangular, Fibonacci, palindrome, perfect), but it is still a composite number.
- 2
24490 is composite. Its prime factorisation is
- 3
The divisors add up to 46080; without 24490 itself that is 21590, so 24490 is deficient (21590 is less than 24490). Euler's totient φ(24490) = 9360 numbers up to 24490 share no factor with it.
- 4
The digits of 24490 add up to 19, and repeating that until one digit is left gives the digital root 1. The Collatz sequence (halve if even, else 3n+1) takes 51 steps to reach 1.
LaTeX source of the formulas on this page
\[ 24490 = 2 \times 5 \times 31 \times 79 \]
24490 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 16 |
| Sum of divisors | 46080 |
| Euler totient φ(n) | 9360 |
| Square | 599760100 |
| Cube | 14688124849000 |
| Square root | 156.492811 |
| Digit sum / digital root | 19 / 1 |
| Collatz steps to 1 | 51 |
| Scientific notation | 2.449 × |
24490 in other forms
| Form | Value |
|---|---|
| In words | twenty-four thousand four hundred and ninety |
| Binary (base 2) | 101111110101010 |
| Octal (base 8) | 57652 |
| Hexadecimal (base 16) | 5FAA |
| Base 3 | 1020121001 |
| As time | 24490 seconds = 6 h 48 min 10 s |
Is 24490 divisible by 2 to 12?
| Divisor | Answer | Rule |
|---|---|---|
| 2 | Yes (24490 ÷ 2 = 12245) | 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 2) | A number is divisible by 4 if the last two digits make a multiple of 4. |
| 5 | Yes (24490 ÷ 5 = 4898) | A number is divisible by 5 if the last digit is 0 or 5. |
| 6 | No (remainder 4) | A number is divisible by 6 if it is divisible by both 2 and 3. |
| 7 | No (remainder 4) | 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 2) | A number is divisible by 8 if the last three digits make a multiple of 8. |
| 9 | No (remainder 1) | A number is divisible by 9 if the digits add up to a multiple of 9. |
| 10 | Yes (24490 ÷ 10 = 2449) | A number is divisible by 10 if the last digit is 0. |
| 11 | No (remainder 4) | A number is divisible by 11 if the alternating sum of the digits is a multiple of 11. |
| 12 | No (remainder 10) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 24490 a prime number?
No. 24490 = 2 × 5 × 31 × 79, so it is divisible by 2.
What are the factors of 24490?
1, 2, 5, 10, 31, 62, 79, 155, 158, 310, 395, 790, 2449, 4898, 12245, 24490.
What is 24490 in binary?
101111110101010 (hexadecimal 5FAA, octal 57652).
What is the square root of 24490?
About 156.4928.
Is 24490 divisible by 3?
No. Its digits add up to 19, which is not a multiple of 3.
What is special about the number 24490?
It is a composite number with 16 divisors.