The number 47471
47471 is a composite number with 4 divisors. Its prime factorisation is 37 × 1283. Divisors (4): 1, 37, 1283, 47471.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 47471: a semiprime: 37 × 1283, the product of two primes.
- 2
47471 is composite. Its prime factorisation is
- 3
The divisors add up to 48792; without 47471 itself that is 1321, so 47471 is deficient (1321 is less than 47471). Euler's totient φ(47471) = 46152 numbers up to 47471 share no factor with it.
- 4
The digits of 47471 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 75 steps to reach 1.
LaTeX source of the formulas on this page
\[ 47471 = 37 \times 1283 \]
47471 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 4 |
| Sum of divisors | 48792 |
| Euler totient φ(n) | 46152 |
| Square | 2253495841 |
| Cube | 106975701068111 |
| Square root | 217.878406 |
| Digit sum / digital root | 23 / 5 |
| Collatz steps to 1 | 75 |
| Scientific notation | 4.7471 × |
47471 in other forms
| Form | Value |
|---|---|
| In words | forty-seven thousand four hundred and seventy-one |
| Binary (base 2) | 1011100101101111 |
| Octal (base 8) | 134557 |
| Hexadecimal (base 16) | B96F |
| Base 3 | 2102010012 |
| As time | 47471 seconds = 13 h 11 min 11 s |
Is 47471 divisible by 2 to 12?
| Divisor | Answer | Rule |
|---|---|---|
| 2 | No (remainder 1) | 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 3) | A number is divisible by 4 if the last two digits make a multiple of 4. |
| 5 | No (remainder 1) | A number is divisible by 5 if the last digit is 0 or 5. |
| 6 | No (remainder 5) | 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 7) | 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 | No (remainder 1) | 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 11) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 47471 a prime number?
No. 47471 = 37 × 1283, so it is divisible by 37.
What are the factors of 47471?
1, 37, 1283, 47471.
What is 47471 in binary?
1011100101101111 (hexadecimal B96F, octal 134557).
What is the square root of 47471?
About 217.8784.
Is 47471 divisible by 3?
No. Its digits add up to 23, which is not a multiple of 3.
What is special about the number 47471?
47471 is a semiprime: 37 × 1283, the product of two primes.