The number 80746
80746 is a composite number with 8 divisors. Its prime factorisation is 2 × 47 × 859. Divisors (8): 1, 2, 47, 94, 859, 1718, 40373, 80746.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
80746 has no famous special property in the usual lists (prime, square, cube, triangular, Fibonacci, palindrome, perfect), but it is still a composite number.
- 2
80746 is composite. Its prime factorisation is
- 3
The divisors add up to 123840; without 80746 itself that is 43094, so 80746 is deficient (43094 is less than 80746). Euler's totient φ(80746) = 39468 numbers up to 80746 share no factor with it.
- 4
The digits of 80746 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 138 steps to reach 1.
LaTeX source of the formulas on this page
\[ 80746 = 2 \times 47 \times 859 \]
80746 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 8 |
| Sum of divisors | 123840 |
| Euler totient φ(n) | 39468 |
| Square | 6519916516 |
| Cube | 526457179000936 |
| Square root | 284.158407 |
| Digit sum / digital root | 25 / 7 |
| Collatz steps to 1 | 138 |
| Scientific notation | 8.0746 × |
80746 in other forms
| Form | Value |
|---|---|
| In words | eighty thousand seven hundred and forty-six |
| Binary (base 2) | 10011101101101010 |
| Octal (base 8) | 235552 |
| Hexadecimal (base 16) | 13B6A |
| Base 3 | 11002202121 |
| As time | 80746 seconds = 22 h 25 min 46 s |
Is 80746 divisible by 2 to 12?
| Divisor | Answer | Rule |
|---|---|---|
| 2 | Yes (80746 ÷ 2 = 40373) | 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 1) | 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 7) | A number is divisible by 9 if the digits add up to a multiple of 9. |
| 10 | No (remainder 6) | 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 10) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 80746 a prime number?
No. 80746 = 2 × 47 × 859, so it is divisible by 2.
What are the factors of 80746?
1, 2, 47, 94, 859, 1718, 40373, 80746.
What is 80746 in binary?
10011101101101010 (hexadecimal 13B6A, octal 235552).
What is the square root of 80746?
About 284.1584.
Is 80746 divisible by 3?
No. Its digits add up to 25, which is not a multiple of 3.
What is special about the number 80746?
It is a composite number with 8 divisors.