The number 27442
27442 is a composite number with 4 divisors. Its prime factorisation is 2 × 13721. Divisors (4): 1, 2, 13721, 27442.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 27442: a semiprime: 2 × 13721, the product of two primes.
- 2
27442 is composite. Its prime factorisation is
- 3
The divisors add up to 41166; without 27442 itself that is 13724, so 27442 is deficient (13724 is less than 27442). Euler's totient φ(27442) = 13720 numbers up to 27442 share no factor with it.
- 4
The digits of 27442 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 64 steps to reach 1.
LaTeX source of the formulas on this page
\[ 27442 = 2 \times 13721 \]
27442 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 4 |
| Sum of divisors | 41166 |
| Euler totient φ(n) | 13720 |
| Square | 753063364 |
| Cube | 20665564834888 |
| Square root | 165.656271 |
| Digit sum / digital root | 19 / 1 |
| Collatz steps to 1 | 64 |
| Scientific notation | 2.7442 × |
27442 in other forms
| Form | Value |
|---|---|
| In words | twenty-seven thousand four hundred and forty-two |
| Binary (base 2) | 110101100110010 |
| Octal (base 8) | 65462 |
| Hexadecimal (base 16) | 6B32 |
| Base 3 | 1101122101 |
| As time | 27442 seconds = 7 h 37 min 22 s |
Is 27442 divisible by 2 to 12?
| Divisor | Answer | Rule |
|---|---|---|
| 2 | Yes (27442 ÷ 2 = 13721) | 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 | No (remainder 2) | 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 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 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 | No (remainder 2) | A number is divisible by 10 if the last digit is 0. |
| 11 | No (remainder 8) | 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 27442 a prime number?
No. 27442 = 2 × 13721, so it is divisible by 2.
What are the factors of 27442?
1, 2, 13721, 27442.
What is 27442 in binary?
110101100110010 (hexadecimal 6B32, octal 65462).
What is the square root of 27442?
About 165.6563.
Is 27442 divisible by 3?
No. Its digits add up to 19, which is not a multiple of 3.
What is special about the number 27442?
27442 is a semiprime: 2 × 13721, the product of two primes.