The number 57438
57438 is a composite number with 12 divisors. Its prime factorisation is 2 × × 3191. Divisors (12): 1, 2, 3, 6, 9, 18, 3191, 6382, 9573, 19146, 28719, 57438.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
57438 has no famous special property in the usual lists (prime, square, cube, triangular, Fibonacci, palindrome, perfect), but it is still a composite number.
- 2
57438 is composite. Its prime factorisation is
- 3
The divisors add up to 124488; without 57438 itself that is 67050, so 57438 is abundant (67050 is more than 57438). Euler's totient φ(57438) = 19140 numbers up to 57438 share no factor with it.
- 4
The digits of 57438 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 197 steps to reach 1.
LaTeX source of the formulas on this page
\[ 57438 = 2 \times 3^{2} \times 3191 \]57438 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 12 |
| Sum of divisors | 124488 |
| Euler totient φ(n) | 19140 |
| Square | 3299123844 |
| Cube | 189495075351672 |
| Square root | 239.662262 (= 3√6382) |
| Digit sum / digital root | 27 / 9 |
| Collatz steps to 1 | 197 |
| Scientific notation | 5.7438 × |
57438 in other forms
| Form | Value |
|---|---|
| In words | fifty-seven thousand four hundred and thirty-eight |
| Binary (base 2) | 1110000001011110 |
| Octal (base 8) | 160136 |
| Hexadecimal (base 16) | E05E |
| Base 3 | 2220210100 |
| As time | 57438 seconds = 15 h 57 min 18 s |
Is 57438 divisible by 2 to 12?
| Divisor | Answer | Rule |
|---|---|---|
| 2 | Yes (57438 ÷ 2 = 28719) | A number is divisible by 2 if the last digit is even (0, 2, 4, 6, 8). |
| 3 | Yes (57438 ÷ 3 = 19146) | 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 (57438 ÷ 6 = 9573) | 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 6) | A number is divisible by 8 if the last three digits make a multiple of 8. |
| 9 | Yes (57438 ÷ 9 = 6382) | 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 57438 a prime number?
No. 57438 = 2 × × 3191, so it is divisible by 2.
What are the factors of 57438?
1, 2, 3, 6, 9, 18, 3191, 6382, 9573, 19146, 28719, 57438.
What is 57438 in binary?
1110000001011110 (hexadecimal E05E, octal 160136).
What is the square root of 57438?
About 239.6623, exactly 3√6382.
Is 57438 divisible by 3?
Yes. Its digits add up to 27, a multiple of 3.
What is special about the number 57438?
It is a composite number with 12 divisors.