The number 27493
27493 is a composite number with 4 divisors. Its prime factorisation is 19 × 1447. Divisors (4): 1, 19, 1447, 27493.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 27493: a semiprime: 19 × 1447, the product of two primes.
- 2
27493 is composite. Its prime factorisation is
- 3
The divisors add up to 28960; without 27493 itself that is 1467, so 27493 is deficient (1467 is less than 27493). Euler's totient φ(27493) = 26028 numbers up to 27493 share no factor with it.
- 4
The digits of 27493 add up to 25, and repeating that until one digit is left gives the digital root 7. The Collatz sequence (halve if even, else 3n+1) takes 33 steps to reach 1.
LaTeX source of the formulas on this page
\[ 27493 = 19 \times 1447 \]
27493 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 4 |
| Sum of divisors | 28960 |
| Euler totient φ(n) | 26028 |
| Square | 755865049 |
| Cube | 20780997792157 |
| Square root | 165.810132 |
| Digit sum / digital root | 25 / 7 |
| Collatz steps to 1 | 33 |
| Scientific notation | 2.7493 × |
27493 in other forms
| Form | Value |
|---|---|
| In words | twenty-seven thousand four hundred and ninety-three |
| Binary (base 2) | 110101101100101 |
| Octal (base 8) | 65545 |
| Hexadecimal (base 16) | 6B65 |
| Base 3 | 1101201021 |
| As time | 27493 seconds = 7 h 38 min 13 s |
Is 27493 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 3) | 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 4) | 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 7) | A number is divisible by 9 if the digits add up to a multiple of 9. |
| 10 | No (remainder 3) | A number is divisible by 10 if the last digit is 0. |
| 11 | No (remainder 4) | 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 27493 a prime number?
No. 27493 = 19 × 1447, so it is divisible by 19.
What are the factors of 27493?
1, 19, 1447, 27493.
What is 27493 in binary?
110101101100101 (hexadecimal 6B65, octal 65545).
What is the square root of 27493?
About 165.8101.
Is 27493 divisible by 3?
No. Its digits add up to 25, which is not a multiple of 3.
What is special about the number 27493?
27493 is a semiprime: 19 × 1447, the product of two primes.