The number 47272
47272 is a composite number with 16 divisors. Its prime factorisation is × 19 × 311. Divisors (16): 1, 2, 4, 8, 19, 38, 76, 152, 311, 622, 1244, 2488, 5909, 11818, 23636, 47272.
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How to work it out
- 1
47272 has no famous special property in the usual lists (prime, square, cube, triangular, Fibonacci, palindrome, perfect), but it is still a composite number.
- 2
47272 is composite. Its prime factorisation is
- 3
The divisors add up to 93600; without 47272 itself that is 46328, so 47272 is deficient (46328 is less than 47272). Euler's totient φ(47272) = 22320 numbers up to 47272 share no factor with it.
- 4
The digits of 47272 add up to 22, and repeating that until one digit is left gives the digital root 4. The Collatz sequence (halve if even, else 3n+1) takes 26 steps to reach 1.
LaTeX source of the formulas on this page
\[ 47272 = 2^{3} \times 19 \times 311 \]47272 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 16 |
| Sum of divisors | 93600 |
| Euler totient φ(n) | 22320 |
| Square | 2234641984 |
| Cube | 105635995867648 |
| Square root | 217.421250 (= 2√11818) |
| Digit sum / digital root | 22 / 4 |
| Collatz steps to 1 | 26 |
| Scientific notation | 4.7272 × |
47272 in other forms
| Form | Value |
|---|---|
| In words | forty-seven thousand two hundred and seventy-two |
| Binary (base 2) | 1011100010101000 |
| Octal (base 8) | 134250 |
| Hexadecimal (base 16) | B8A8 |
| Base 3 | 2101211211 |
| As time | 47272 seconds = 13 h 7 min 52 s |
Is 47272 divisible by 2 to 12?
| Divisor | Answer | Rule |
|---|---|---|
| 2 | Yes (47272 ÷ 2 = 23636) | 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 | Yes (47272 ÷ 4 = 11818) | 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 | Yes (47272 ÷ 8 = 5909) | A number is divisible by 8 if the last three digits make a multiple of 8. |
| 9 | No (remainder 4) | 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 4) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 47272 a prime number?
No. 47272 = × 19 × 311, so it is divisible by 2.
What are the factors of 47272?
1, 2, 4, 8, 19, 38, 76, 152, 311, 622, 1244, 2488, 5909, 11818, 23636, 47272.
What is 47272 in binary?
1011100010101000 (hexadecimal B8A8, octal 134250).
What is the square root of 47272?
About 217.4213, exactly 2√11818.
Is 47272 divisible by 3?
No. Its digits add up to 22, which is not a multiple of 3.
What is special about the number 47272?
It is a composite number with 16 divisors.