The number 27165
27165 is a composite number with 8 divisors. Its prime factorisation is 3 × 5 × 1811. Divisors (8): 1, 3, 5, 15, 1811, 5433, 9055, 27165.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
27165 has no famous special property in the usual lists (prime, square, cube, triangular, Fibonacci, palindrome, perfect), but it is still a composite number.
- 2
27165 is composite. Its prime factorisation is
- 3
The divisors add up to 43488; without 27165 itself that is 16323, so 27165 is deficient (16323 is less than 27165). Euler's totient φ(27165) = 14480 numbers up to 27165 share no factor with it.
- 4
The digits of 27165 add up to 21, and repeating that until one digit is left gives the digital root 3. The Collatz sequence (halve if even, else 3n+1) takes 38 steps to reach 1.
LaTeX source of the formulas on this page
\[ 27165 = 3 \times 5 \times 1811 \]
27165 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 8 |
| Sum of divisors | 43488 |
| Euler totient φ(n) | 14480 |
| Square | 737937225 |
| Cube | 20046064717125 |
| Square root | 164.818082 |
| Digit sum / digital root | 21 / 3 |
| Collatz steps to 1 | 38 |
| Scientific notation | 2.7165 × |
27165 in other forms
| Form | Value |
|---|---|
| In words | twenty-seven thousand one hundred and sixty-five |
| Binary (base 2) | 110101000011101 |
| Octal (base 8) | 65035 |
| Hexadecimal (base 16) | 6A1D |
| Base 3 | 1101021010 |
| As time | 27165 seconds = 7 h 32 min 45 s |
Is 27165 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 | Yes (27165 ÷ 3 = 9055) | A number is divisible by 3 if the digits add up to a multiple of 3. |
| 4 | No (remainder 1) | A number is divisible by 4 if the last two digits make a multiple of 4. |
| 5 | Yes (27165 ÷ 5 = 5433) | A number is divisible by 5 if the last digit is 0 or 5. |
| 6 | No (remainder 3) | A number is divisible by 6 if it is divisible by both 2 and 3. |
| 7 | No (remainder 5) | 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 5) | A number is divisible by 8 if the last three digits make a multiple of 8. |
| 9 | No (remainder 3) | A number is divisible by 9 if the digits add up to a multiple of 9. |
| 10 | No (remainder 5) | 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 9) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 27165 a prime number?
No. 27165 = 3 × 5 × 1811, so it is divisible by 3.
What are the factors of 27165?
1, 3, 5, 15, 1811, 5433, 9055, 27165.
What is 27165 in binary?
110101000011101 (hexadecimal 6A1D, octal 65035).
What is the square root of 27165?
About 164.8181.
Is 27165 divisible by 3?
Yes. Its digits add up to 21, a multiple of 3.
What is special about the number 27165?
It is a composite number with 8 divisors.