The number 27309
27309 is a composite number with 4 divisors. Its prime factorisation is 3 × 9103. Divisors (4): 1, 3, 9103, 27309.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 27309: a semiprime: 3 × 9103, the product of two primes.
- 2
27309 is composite. Its prime factorisation is
- 3
The divisors add up to 36416; without 27309 itself that is 9107, so 27309 is deficient (9107 is less than 27309). Euler's totient φ(27309) = 18204 numbers up to 27309 share no factor with it.
- 4
The digits of 27309 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 183 steps to reach 1.
LaTeX source of the formulas on this page
\[ 27309 = 3 \times 9103 \]
27309 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 4 |
| Sum of divisors | 36416 |
| Euler totient φ(n) | 18204 |
| Square | 745781481 |
| Cube | 20366546464629 |
| Square root | 165.254349 |
| Digit sum / digital root | 21 / 3 |
| Collatz steps to 1 | 183 |
| Scientific notation | 2.7309 × |
27309 in other forms
| Form | Value |
|---|---|
| In words | twenty-seven thousand three hundred and nine |
| Binary (base 2) | 110101010101101 |
| Octal (base 8) | 65255 |
| Hexadecimal (base 16) | 6AAD |
| Base 3 | 1101110110 |
| As time | 27309 seconds = 7 h 35 min 9 s |
Is 27309 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 (27309 ÷ 3 = 9103) | 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 | No (remainder 4) | 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 2) | 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 9) | A number is divisible by 10 if the last digit is 0. |
| 11 | No (remainder 7) | 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 27309 a prime number?
No. 27309 = 3 × 9103, so it is divisible by 3.
What are the factors of 27309?
1, 3, 9103, 27309.
What is 27309 in binary?
110101010101101 (hexadecimal 6AAD, octal 65255).
What is the square root of 27309?
About 165.2543.
Is 27309 divisible by 3?
Yes. Its digits add up to 21, a multiple of 3.
What is special about the number 27309?
27309 is a semiprime: 3 × 9103, the product of two primes.