The number 27139
27139 is a composite number with 4 divisors. Its prime factorisation is 7 × 3877. Divisors (4): 1, 7, 3877, 27139.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 27139: a semiprime: 7 × 3877, the product of two primes.
- 2
27139 is composite. Its prime factorisation is
- 3
The divisors add up to 31024; without 27139 itself that is 3885, so 27139 is deficient (3885 is less than 27139). Euler's totient φ(27139) = 23256 numbers up to 27139 share no factor with it.
- 4
The digits of 27139 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 38 steps to reach 1.
LaTeX source of the formulas on this page
\[ 27139 = 7 \times 3877 \]
27139 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 4 |
| Sum of divisors | 31024 |
| Euler totient φ(n) | 23256 |
| Square | 736525321 |
| Cube | 19988560686619 |
| Square root | 164.739188 |
| Digit sum / digital root | 22 / 4 |
| Collatz steps to 1 | 38 |
| Scientific notation | 2.7139 × |
27139 in other forms
| Form | Value |
|---|---|
| In words | twenty-seven thousand one hundred and thirty-nine |
| Binary (base 2) | 110101000000011 |
| Octal (base 8) | 65003 |
| Hexadecimal (base 16) | 6A03 |
| Base 3 | 1101020011 |
| As time | 27139 seconds = 7 h 32 min 19 s |
Is 27139 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 3) | 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 | Yes (27139 ÷ 7 = 3877) | 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 3) | 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 9) | 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 7) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 27139 a prime number?
No. 27139 = 7 × 3877, so it is divisible by 7.
What are the factors of 27139?
1, 7, 3877, 27139.
What is 27139 in binary?
110101000000011 (hexadecimal 6A03, octal 65003).
What is the square root of 27139?
About 164.7392.
Is 27139 divisible by 3?
No. Its digits add up to 22, which is not a multiple of 3.
What is special about the number 27139?
27139 is a semiprime: 7 × 3877, the product of two primes.