The number 47347
47347 is a composite number with 4 divisors. Its prime factorisation is 113 × 419. Divisors (4): 1, 113, 419, 47347.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 47347: a happy number: repeatedly adding the squares of its digits reaches 1; a semiprime: 113 × 419, the product of two primes.
- 2
47347 is composite. Its prime factorisation is
- 3
The divisors add up to 47880; without 47347 itself that is 533, so 47347 is deficient (533 is less than 47347). Euler's totient φ(47347) = 46816 numbers up to 47347 share no factor with it.
- 4
The digits of 47347 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 176 steps to reach 1.
LaTeX source of the formulas on this page
\[ 47347 = 113 \times 419 \]
47347 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 4 |
| Sum of divisors | 47880 |
| Euler totient φ(n) | 46816 |
| Square | 2241738409 |
| Cube | 106139588450923 |
| Square root | 217.593658 |
| Digit sum / digital root | 25 / 7 |
| Collatz steps to 1 | 176 |
| Scientific notation | 4.7347 × |
47347 in other forms
| Form | Value |
|---|---|
| In words | forty-seven thousand three hundred and forty-seven |
| Binary (base 2) | 1011100011110011 |
| Octal (base 8) | 134363 |
| Hexadecimal (base 16) | B8F3 |
| Base 3 | 2101221121 |
| As time | 47347 seconds = 13 h 9 min 7 s |
Is 47347 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 1) | 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 2) | A number is divisible by 5 if the last digit is 0 or 5. |
| 6 | No (remainder 1) | A number is divisible by 6 if it is divisible by both 2 and 3. |
| 7 | No (remainder 6) | 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 3) | 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 7) | A number is divisible by 10 if the last digit is 0. |
| 11 | No (remainder 3) | A number is divisible by 11 if the alternating sum of the digits is a multiple of 11. |
| 12 | No (remainder 7) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 47347 a prime number?
No. 47347 = 113 × 419, so it is divisible by 113.
What are the factors of 47347?
1, 113, 419, 47347.
What is 47347 in binary?
1011100011110011 (hexadecimal B8F3, octal 134363).
What is the square root of 47347?
About 217.5937.
Is 47347 divisible by 3?
No. Its digits add up to 25, which is not a multiple of 3.
What is special about the number 47347?
47347 is a happy number: repeatedly adding the squares of its digits reaches 1; a semiprime: 113 × 419, the product of two primes.