The number 80790
80790 is a composite number with 16 divisors. Its prime factorisation is 2 × 3 × 5 × 2693. Divisors (16): 1, 2, 3, 5, 6, 10, 15, 30, 2693, 5386, 8079, 13465, 16158, 26930, 40395, 80790.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
80790 has no famous special property in the usual lists (prime, square, cube, triangular, Fibonacci, palindrome, perfect), but it is still a composite number.
- 2
80790 is composite. Its prime factorisation is
- 3
The divisors add up to 193968; without 80790 itself that is 113178, so 80790 is abundant (113178 is more than 80790). Euler's totient φ(80790) = 21536 numbers up to 80790 share no factor with it.
- 4
The digits of 80790 add up to 24, and repeating that until one digit is left gives the digital root 6. The Collatz sequence (halve if even, else 3n+1) takes 89 steps to reach 1.
LaTeX source of the formulas on this page
\[ 80790 = 2 \times 3 \times 5 \times 2693 \]
80790 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 16 |
| Sum of divisors | 193968 |
| Euler totient φ(n) | 21536 |
| Square | 6527024100 |
| Cube | 527318277039000 |
| Square root | 284.235818 |
| Digit sum / digital root | 24 / 6 |
| Collatz steps to 1 | 89 |
| Scientific notation | 8.079 × |
80790 in other forms
| Form | Value |
|---|---|
| In words | eighty thousand seven hundred and ninety |
| Binary (base 2) | 10011101110010110 |
| Octal (base 8) | 235626 |
| Hexadecimal (base 16) | 13B96 |
| Base 3 | 11002211020 |
| As time | 80790 seconds = 22 h 26 min 30 s |
Is 80790 divisible by 2 to 12?
| Divisor | Answer | Rule |
|---|---|---|
| 2 | Yes (80790 ÷ 2 = 40395) | A number is divisible by 2 if the last digit is even (0, 2, 4, 6, 8). |
| 3 | Yes (80790 ÷ 3 = 26930) | 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 | Yes (80790 ÷ 5 = 16158) | A number is divisible by 5 if the last digit is 0 or 5. |
| 6 | Yes (80790 ÷ 6 = 13465) | 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 6) | A number is divisible by 8 if the last three digits make a multiple of 8. |
| 9 | No (remainder 6) | A number is divisible by 9 if the digits add up to a multiple of 9. |
| 10 | Yes (80790 ÷ 10 = 8079) | 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 6) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 80790 a prime number?
No. 80790 = 2 × 3 × 5 × 2693, so it is divisible by 2.
What are the factors of 80790?
1, 2, 3, 5, 6, 10, 15, 30, 2693, 5386, 8079, 13465, 16158, 26930, 40395, 80790.
What is 80790 in binary?
10011101110010110 (hexadecimal 13B96, octal 235626).
What is the square root of 80790?
About 284.2358.
Is 80790 divisible by 3?
Yes. Its digits add up to 24, a multiple of 3.
What is special about the number 80790?
It is a composite number with 16 divisors.