The number 27994
27994 is a composite number with 4 divisors. Its prime factorisation is 2 × 13997. Divisors (4): 1, 2, 13997, 27994.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 27994: a semiprime: 2 × 13997, the product of two primes.
- 2
27994 is composite. Its prime factorisation is
- 3
The divisors add up to 41994; without 27994 itself that is 14000, so 27994 is deficient (14000 is less than 27994). Euler's totient φ(27994) = 13996 numbers up to 27994 share no factor with it.
- 4
The digits of 27994 add up to 31, and repeating that until one digit is left gives the digital root 4. The Collatz sequence (halve if even, else 3n+1) takes 134 steps to reach 1.
LaTeX source of the formulas on this page
\[ 27994 = 2 \times 13997 \]
27994 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 4 |
| Sum of divisors | 41994 |
| Euler totient φ(n) | 13996 |
| Square | 783664036 |
| Cube | 21937891023784 |
| Square root | 167.314076 |
| Digit sum / digital root | 31 / 4 |
| Collatz steps to 1 | 134 |
| Scientific notation | 2.7994 × |
27994 in other forms
| Form | Value |
|---|---|
| In words | twenty-seven thousand nine hundred and ninety-four |
| Binary (base 2) | 110110101011010 |
| Octal (base 8) | 66532 |
| Hexadecimal (base 16) | 6D5A |
| Base 3 | 1102101211 |
| As time | 27994 seconds = 7 h 46 min 34 s |
Is 27994 divisible by 2 to 12?
| Divisor | Answer | Rule |
|---|---|---|
| 2 | Yes (27994 ÷ 2 = 13997) | 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 4) | 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 1) | 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 4) | A number is divisible by 9 if the digits add up to a multiple of 9. |
| 10 | No (remainder 4) | A number is divisible by 10 if the last digit is 0. |
| 11 | No (remainder 10) | 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 27994 a prime number?
No. 27994 = 2 × 13997, so it is divisible by 2.
What are the factors of 27994?
1, 2, 13997, 27994.
What is 27994 in binary?
110110101011010 (hexadecimal 6D5A, octal 66532).
What is the square root of 27994?
About 167.3141.
Is 27994 divisible by 3?
No. Its digits add up to 31, which is not a multiple of 3.
What is special about the number 27994?
27994 is a semiprime: 2 × 13997, the product of two primes.