The number 47170
47170 is a composite number with 16 divisors. Its prime factorisation is 2 × 5 × 53 × 89. Divisors (16): 1, 2, 5, 10, 53, 89, 106, 178, 265, 445, 530, 890, 4717, 9434, 23585, 47170.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
47170 has no famous special property in the usual lists (prime, square, cube, triangular, Fibonacci, palindrome, perfect), but it is still a composite number.
- 2
47170 is composite. Its prime factorisation is
- 3
The divisors add up to 87480; without 47170 itself that is 40310, so 47170 is deficient (40310 is less than 47170). Euler's totient φ(47170) = 18304 numbers up to 47170 share no factor with it.
- 4
The digits of 47170 add up to 19, and repeating that until one digit is left gives the digital root 1. The Collatz sequence (halve if even, else 3n+1) takes 83 steps to reach 1.
LaTeX source of the formulas on this page
\[ 47170 = 2 \times 5 \times 53 \times 89 \]
47170 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 16 |
| Sum of divisors | 87480 |
| Euler totient φ(n) | 18304 |
| Square | 2225008900 |
| Cube | 104953669813000 |
| Square root | 217.186556 |
| Digit sum / digital root | 19 / 1 |
| Collatz steps to 1 | 83 |
| Scientific notation | 4.717 × |
47170 in other forms
| Form | Value |
|---|---|
| In words | forty-seven thousand one hundred and seventy |
| Binary (base 2) | 1011100001000010 |
| Octal (base 8) | 134102 |
| Hexadecimal (base 16) | B842 |
| Base 3 | 2101201001 |
| As time | 47170 seconds = 13 h 6 min 10 s |
Is 47170 divisible by 2 to 12?
| Divisor | Answer | Rule |
|---|---|---|
| 2 | Yes (47170 ÷ 2 = 23585) | 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 | Yes (47170 ÷ 5 = 9434) | 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 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 2) | A number is divisible by 8 if the last three digits make a multiple of 8. |
| 9 | No (remainder 1) | A number is divisible by 9 if the digits add up to a multiple of 9. |
| 10 | Yes (47170 ÷ 10 = 4717) | A number is divisible by 10 if the last digit is 0. |
| 11 | No (remainder 2) | 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 47170 a prime number?
No. 47170 = 2 × 5 × 53 × 89, so it is divisible by 2.
What are the factors of 47170?
1, 2, 5, 10, 53, 89, 106, 178, 265, 445, 530, 890, 4717, 9434, 23585, 47170.
What is 47170 in binary?
1011100001000010 (hexadecimal B842, octal 134102).
What is the square root of 47170?
About 217.1866.
Is 47170 divisible by 3?
No. Its digits add up to 19, which is not a multiple of 3.
What is special about the number 47170?
It is a composite number with 16 divisors.