The number 27289
27289 is a composite number with 4 divisors. Its prime factorisation is 29 × 941. Divisors (4): 1, 29, 941, 27289.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 27289: a semiprime: 29 × 941, the product of two primes.
- 2
27289 is composite. Its prime factorisation is
- 3
The divisors add up to 28260; without 27289 itself that is 971, so 27289 is deficient (971 is less than 27289). Euler's totient φ(27289) = 26320 numbers up to 27289 share no factor with it.
- 4
The digits of 27289 add up to 28, and repeating that until one digit is left gives the digital root 1. The Collatz sequence (halve if even, else 3n+1) takes 183 steps to reach 1.
LaTeX source of the formulas on this page
\[ 27289 = 29 \times 941 \]
27289 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 4 |
| Sum of divisors | 28260 |
| Euler totient φ(n) | 26320 |
| Square | 744689521 |
| Cube | 20321832338569 |
| Square root | 165.193826 |
| Digit sum / digital root | 28 / 1 |
| Collatz steps to 1 | 183 |
| Scientific notation | 2.7289 × |
27289 in other forms
| Form | Value |
|---|---|
| In words | twenty-seven thousand two hundred and eighty-nine |
| Binary (base 2) | 110101010011001 |
| Octal (base 8) | 65231 |
| Hexadecimal (base 16) | 6A99 |
| Base 3 | 1101102201 |
| As time | 27289 seconds = 7 h 34 min 49 s |
Is 27289 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 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 1) | A number is divisible by 6 if it is divisible by both 2 and 3. |
| 7 | No (remainder 3) | 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 1) | 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 | No (remainder 9) | A number is divisible by 10 if the last digit is 0. |
| 11 | No (remainder 9) | A number is divisible by 11 if the alternating sum of the digits is a multiple of 11. |
| 12 | No (remainder 1) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 27289 a prime number?
No. 27289 = 29 × 941, so it is divisible by 29.
What are the factors of 27289?
1, 29, 941, 27289.
What is 27289 in binary?
110101010011001 (hexadecimal 6A99, octal 65231).
What is the square root of 27289?
About 165.1938.
Is 27289 divisible by 3?
No. Its digits add up to 28, which is not a multiple of 3.
What is special about the number 27289?
27289 is a semiprime: 29 × 941, the product of two primes.