The number 27023
27023 is a composite number with 4 divisors. Its prime factorisation is 61 × 443. Divisors (4): 1, 61, 443, 27023.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 27023: a semiprime: 61 × 443, the product of two primes.
- 2
27023 is composite. Its prime factorisation is
- 3
The divisors add up to 27528; without 27023 itself that is 505, so 27023 is deficient (505 is less than 27023). Euler's totient φ(27023) = 26520 numbers up to 27023 share no factor with it.
- 4
The digits of 27023 add up to 14, and repeating that until one digit is left gives the digital root 5. The Collatz sequence (halve if even, else 3n+1) takes 77 steps to reach 1.
LaTeX source of the formulas on this page
\[ 27023 = 61 \times 443 \]
27023 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 4 |
| Sum of divisors | 27528 |
| Euler totient φ(n) | 26520 |
| Square | 730242529 |
| Cube | 19733343861167 |
| Square root | 164.386739 |
| Digit sum / digital root | 14 / 5 |
| Collatz steps to 1 | 77 |
| Scientific notation | 2.7023 × |
27023 in other forms
| Form | Value |
|---|---|
| In words | twenty-seven thousand and twenty-three |
| Binary (base 2) | 110100110001111 |
| Octal (base 8) | 64617 |
| Hexadecimal (base 16) | 698F |
| Base 3 | 1101001212 |
| As time | 27023 seconds = 7 h 30 min 23 s |
Is 27023 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 2) | 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 3) | A number is divisible by 5 if the last digit is 0 or 5. |
| 6 | No (remainder 5) | 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 7) | A number is divisible by 8 if the last three digits make a multiple of 8. |
| 9 | No (remainder 5) | 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 7) | A number is divisible by 11 if the alternating sum of the digits is a multiple of 11. |
| 12 | No (remainder 11) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 27023 a prime number?
No. 27023 = 61 × 443, so it is divisible by 61.
What are the factors of 27023?
1, 61, 443, 27023.
What is 27023 in binary?
110100110001111 (hexadecimal 698F, octal 64617).
What is the square root of 27023?
About 164.3867.
Is 27023 divisible by 3?
No. Its digits add up to 14, which is not a multiple of 3.
What is special about the number 27023?
27023 is a semiprime: 61 × 443, the product of two primes.