The number 28067
28067 is a composite number with 8 divisors. Its prime factorisation is 13 × 17 × 127. Divisors (8): 1, 13, 17, 127, 221, 1651, 2159, 28067.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
28067 has no famous special property in the usual lists (prime, square, cube, triangular, Fibonacci, palindrome, perfect), but it is still a composite number.
- 2
28067 is composite. Its prime factorisation is
- 3
The divisors add up to 32256; without 28067 itself that is 4189, so 28067 is deficient (4189 is less than 28067). Euler's totient φ(28067) = 24192 numbers up to 28067 share no factor with it.
- 4
The digits of 28067 add up to 23, and repeating that until one digit is left gives the digital root 5. The Collatz sequence (halve if even, else 3n+1) takes 196 steps to reach 1.
LaTeX source of the formulas on this page
\[ 28067 = 13 \times 17 \times 127 \]
28067 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 8 |
| Sum of divisors | 32256 |
| Euler totient φ(n) | 24192 |
| Square | 787756489 |
| Cube | 22109961376763 |
| Square root | 167.532086 |
| Digit sum / digital root | 23 / 5 |
| Collatz steps to 1 | 196 |
| Scientific notation | 2.8067 × |
28067 in other forms
| Form | Value |
|---|---|
| In words | twenty-eight thousand and sixty-seven |
| Binary (base 2) | 110110110100011 |
| Octal (base 8) | 66643 |
| Hexadecimal (base 16) | 6DA3 |
| Base 3 | 1102111112 |
| As time | 28067 seconds = 7 h 47 min 47 s |
Is 28067 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 2) | 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 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 3) | 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 7) | A number is divisible by 10 if the last digit is 0. |
| 11 | No (remainder 6) | 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 28067 a prime number?
No. 28067 = 13 × 17 × 127, so it is divisible by 13.
What are the factors of 28067?
1, 13, 17, 127, 221, 1651, 2159, 28067.
What is 28067 in binary?
110110110100011 (hexadecimal 6DA3, octal 66643).
What is the square root of 28067?
About 167.5321.
Is 28067 divisible by 3?
No. Its digits add up to 23, which is not a multiple of 3.
What is special about the number 28067?
It is a composite number with 8 divisors.