The number 47482
47482 is a composite number with 4 divisors. Its prime factorisation is 2 × 23741. Divisors (4): 1, 2, 23741, 47482.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 47482: a semiprime: 2 × 23741, the product of two primes.
- 2
47482 is composite. Its prime factorisation is
- 3
The divisors add up to 71226; without 47482 itself that is 23744, so 47482 is deficient (23744 is less than 47482). Euler's totient φ(47482) = 23740 numbers up to 47482 share no factor with it.
- 4
The digits of 47482 add up to 25, and repeating that until one digit is left gives the digital root 7. The Collatz sequence (halve if even, else 3n+1) takes 101 steps to reach 1.
LaTeX source of the formulas on this page
\[ 47482 = 2 \times 23741 \]
47482 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 4 |
| Sum of divisors | 71226 |
| Euler totient φ(n) | 23740 |
| Square | 2254540324 |
| Cube | 107050083664168 |
| Square root | 217.903648 |
| Digit sum / digital root | 25 / 7 |
| Collatz steps to 1 | 101 |
| Scientific notation | 4.7482 × |
47482 in other forms
| Form | Value |
|---|---|
| In words | forty-seven thousand four hundred and eighty-two |
| Binary (base 2) | 1011100101111010 |
| Octal (base 8) | 134572 |
| Hexadecimal (base 16) | B97A |
| Base 3 | 2102010121 |
| As time | 47482 seconds = 13 h 11 min 22 s |
Is 47482 divisible by 2 to 12?
| Divisor | Answer | Rule |
|---|---|---|
| 2 | Yes (47482 ÷ 2 = 23741) | 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 | No (remainder 2) | 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 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 2) | A number is divisible by 8 if the last three digits make a multiple of 8. |
| 9 | No (remainder 7) | 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 6) | 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 47482 a prime number?
No. 47482 = 2 × 23741, so it is divisible by 2.
What are the factors of 47482?
1, 2, 23741, 47482.
What is 47482 in binary?
1011100101111010 (hexadecimal B97A, octal 134572).
What is the square root of 47482?
About 217.9036.
Is 47482 divisible by 3?
No. Its digits add up to 25, which is not a multiple of 3.
What is special about the number 47482?
47482 is a semiprime: 2 × 23741, the product of two primes.