The number 24438
24438 is a composite number with 8 divisors. Its prime factorisation is 2 × 3 × 4073. Divisors (8): 1, 2, 3, 6, 4073, 8146, 12219, 24438.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 24438: a happy number: repeatedly adding the squares of its digits reaches 1.
- 2
24438 is composite. Its prime factorisation is
- 3
The divisors add up to 48888; without 24438 itself that is 24450, so 24438 is abundant (24450 is more than 24438). Euler's totient φ(24438) = 8144 numbers up to 24438 share no factor with it.
- 4
The digits of 24438 add up to 21, and repeating that until one digit is left gives the digital root 3. The Collatz sequence (halve if even, else 3n+1) takes 38 steps to reach 1.
LaTeX source of the formulas on this page
\[ 24438 = 2 \times 3 \times 4073 \]
24438 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 8 |
| Sum of divisors | 48888 |
| Euler totient φ(n) | 8144 |
| Square | 597215844 |
| Cube | 14594760795672 |
| Square root | 156.326581 |
| Digit sum / digital root | 21 / 3 |
| Collatz steps to 1 | 38 |
| Scientific notation | 2.4438 × |
24438 in other forms
| Form | Value |
|---|---|
| In words | twenty-four thousand four hundred and thirty-eight |
| Binary (base 2) | 101111101110110 |
| Octal (base 8) | 57566 |
| Hexadecimal (base 16) | 5F76 |
| Base 3 | 1020112010 |
| As time | 24438 seconds = 6 h 47 min 18 s |
Is 24438 divisible by 2 to 12?
| Divisor | Answer | Rule |
|---|---|---|
| 2 | Yes (24438 ÷ 2 = 12219) | A number is divisible by 2 if the last digit is even (0, 2, 4, 6, 8). |
| 3 | Yes (24438 ÷ 3 = 8146) | 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 | No (remainder 3) | A number is divisible by 5 if the last digit is 0 or 5. |
| 6 | Yes (24438 ÷ 6 = 4073) | A number is divisible by 6 if it is divisible by both 2 and 3. |
| 7 | No (remainder 1) | 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 6) | 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 8) | A number is divisible by 10 if the last digit is 0. |
| 11 | No (remainder 7) | A number is divisible by 11 if the alternating sum of the digits is a multiple of 11. |
| 12 | No (remainder 6) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 24438 a prime number?
No. 24438 = 2 × 3 × 4073, so it is divisible by 2.
What are the factors of 24438?
1, 2, 3, 6, 4073, 8146, 12219, 24438.
What is 24438 in binary?
101111101110110 (hexadecimal 5F76, octal 57566).
What is the square root of 24438?
About 156.3266.
Is 24438 divisible by 3?
Yes. Its digits add up to 21, a multiple of 3.
What is special about the number 24438?
24438 is a happy number: repeatedly adding the squares of its digits reaches 1.