The number 47492
47492 is a composite number with 12 divisors. Its prime factorisation is × 31 × 383. Divisors (12): 1, 2, 4, 31, 62, 124, 383, 766, 1532, 11873, 23746, 47492.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
47492 has no famous special property in the usual lists (prime, square, cube, triangular, Fibonacci, palindrome, perfect), but it is still a composite number.
- 2
47492 is composite. Its prime factorisation is
- 3
The divisors add up to 86016; without 47492 itself that is 38524, so 47492 is deficient (38524 is less than 47492). Euler's totient φ(47492) = 22920 numbers up to 47492 share no factor with it.
- 4
The digits of 47492 add up to 26, and repeating that until one digit is left gives the digital root 8. The Collatz sequence (halve if even, else 3n+1) takes 101 steps to reach 1.
LaTeX source of the formulas on this page
\[ 47492 = 2^{2} \times 31 \times 383 \]47492 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 12 |
| Sum of divisors | 86016 |
| Euler totient φ(n) | 22920 |
| Square | 2255490064 |
| Cube | 107117734119488 |
| Square root | 217.926593 (= 2√11873) |
| Digit sum / digital root | 26 / 8 |
| Collatz steps to 1 | 101 |
| Scientific notation | 4.7492 × |
47492 in other forms
| Form | Value |
|---|---|
| In words | forty-seven thousand four hundred and ninety-two |
| Binary (base 2) | 1011100110000100 |
| Octal (base 8) | 134604 |
| Hexadecimal (base 16) | B984 |
| Base 3 | 2102010222 |
| As time | 47492 seconds = 13 h 11 min 32 s |
Is 47492 divisible by 2 to 12?
| Divisor | Answer | Rule |
|---|---|---|
| 2 | Yes (47492 ÷ 2 = 23746) | 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 | Yes (47492 ÷ 4 = 11873) | A number is divisible by 4 if the last two digits make a multiple of 4. |
| 5 | No (remainder 2) | 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 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 4) | A number is divisible by 8 if the last three digits make a multiple of 8. |
| 9 | No (remainder 8) | A number is divisible by 9 if the digits add up to a multiple of 9. |
| 10 | No (remainder 2) | A number is divisible by 10 if the last digit is 0. |
| 11 | No (remainder 5) | A number is divisible by 11 if the alternating sum of the digits is a multiple of 11. |
| 12 | No (remainder 8) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 47492 a prime number?
No. 47492 = × 31 × 383, so it is divisible by 2.
What are the factors of 47492?
1, 2, 4, 31, 62, 124, 383, 766, 1532, 11873, 23746, 47492.
What is 47492 in binary?
1011100110000100 (hexadecimal B984, octal 134604).
What is the square root of 47492?
About 217.9266, exactly 2√11873.
Is 47492 divisible by 3?
No. Its digits add up to 26, which is not a multiple of 3.
What is special about the number 47492?
It is a composite number with 12 divisors.