The number 73081
73081 is a composite number with 4 divisors. Its prime factorisation is 107 × 683. Divisors (4): 1, 107, 683, 73081.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 73081: a semiprime: 107 × 683, the product of two primes.
- 2
73081 is composite. Its prime factorisation is
- 3
The divisors add up to 73872; without 73081 itself that is 791, so 73081 is deficient (791 is less than 73081). Euler's totient φ(73081) = 72292 numbers up to 73081 share no factor with it.
- 4
The digits of 73081 add up to 19, and repeating that until one digit is left gives the digital root 1. The Collatz sequence (halve if even, else 3n+1) takes 174 steps to reach 1.
LaTeX source of the formulas on this page
\[ 73081 = 107 \times 683 \]
73081 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 4 |
| Sum of divisors | 73872 |
| Euler totient φ(n) | 72292 |
| Square | 5340832561 |
| Cube | 390313384390441 |
| Square root | 270.334977 |
| Digit sum / digital root | 19 / 1 |
| Collatz steps to 1 | 174 |
| Scientific notation | 7.3081 × |
73081 in other forms
| Form | Value |
|---|---|
| In words | seventy-three thousand and eighty-one |
| Binary (base 2) | 10001110101111001 |
| Octal (base 8) | 216571 |
| Hexadecimal (base 16) | 11D79 |
| Base 3 | 10201020201 |
| As time | 73081 seconds = 20 h 18 min 1 s |
Is 73081 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 1) | 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 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 1) | A number is divisible by 8 if the last three digits make a multiple of 8. |
| 9 | No (remainder 1) | A number is divisible by 9 if the digits add up to a multiple of 9. |
| 10 | No (remainder 1) | A number is divisible by 10 if the last digit is 0. |
| 11 | No (remainder 8) | 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 73081 a prime number?
No. 73081 = 107 × 683, so it is divisible by 107.
What are the factors of 73081?
1, 107, 683, 73081.
What is 73081 in binary?
10001110101111001 (hexadecimal 11D79, octal 216571).
What is the square root of 73081?
About 270.3350.
Is 73081 divisible by 3?
No. Its digits add up to 19, which is not a multiple of 3.
What is special about the number 73081?
73081 is a semiprime: 107 × 683, the product of two primes.