The number 57290
57290 is a composite number with 16 divisors. Its prime factorisation is 2 × 5 × 17 × 337. Divisors (16): 1, 2, 5, 10, 17, 34, 85, 170, 337, 674, 1685, 3370, 5729, 11458, 28645, 57290.
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How to work it out
- 1
57290 has no famous special property in the usual lists (prime, square, cube, triangular, Fibonacci, palindrome, perfect), but it is still a composite number.
- 2
57290 is composite. Its prime factorisation is
- 3
The divisors add up to 109512; without 57290 itself that is 52222, so 57290 is deficient (52222 is less than 57290). Euler's totient φ(57290) = 21504 numbers up to 57290 share no factor with it.
- 4
The digits of 57290 add up to 23, and repeating that until one digit is left gives the digital root 5. The Collatz sequence (halve if even, else 3n+1) takes 135 steps to reach 1.
LaTeX source of the formulas on this page
\[ 57290 = 2 \times 5 \times 17 \times 337 \]
57290 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 16 |
| Sum of divisors | 109512 |
| Euler totient φ(n) | 21504 |
| Square | 3282144100 |
| Cube | 188034035489000 |
| Square root | 239.353295 |
| Digit sum / digital root | 23 / 5 |
| Collatz steps to 1 | 135 |
| Scientific notation | 5.729 × |
57290 in other forms
| Form | Value |
|---|---|
| In words | fifty-seven thousand two hundred and ninety |
| Binary (base 2) | 1101111111001010 |
| Octal (base 8) | 157712 |
| Hexadecimal (base 16) | DFCA |
| Base 3 | 2220120212 |
| As time | 57290 seconds = 15 h 54 min 50 s |
Is 57290 divisible by 2 to 12?
| Divisor | Answer | Rule |
|---|---|---|
| 2 | Yes (57290 ÷ 2 = 28645) | A number is divisible by 2 if the last digit is even (0, 2, 4, 6, 8). |
| 3 | No (remainder 2) | 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 (57290 ÷ 5 = 11458) | A number is divisible by 5 if the last digit is 0 or 5. |
| 6 | No (remainder 2) | A number is divisible by 6 if it is divisible by both 2 and 3. |
| 7 | No (remainder 2) | 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 5) | A number is divisible by 9 if the digits add up to a multiple of 9. |
| 10 | Yes (57290 ÷ 10 = 5729) | 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 2) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 57290 a prime number?
No. 57290 = 2 × 5 × 17 × 337, so it is divisible by 2.
What are the factors of 57290?
1, 2, 5, 10, 17, 34, 85, 170, 337, 674, 1685, 3370, 5729, 11458, 28645, 57290.
What is 57290 in binary?
1101111111001010 (hexadecimal DFCA, octal 157712).
What is the square root of 57290?
About 239.3533.
Is 57290 divisible by 3?
No. Its digits add up to 23, which is not a multiple of 3.
What is special about the number 57290?
It is a composite number with 16 divisors.