The number 73015
73015 is a composite number with 8 divisors. Its prime factorisation is 5 × 17 × 859. Divisors (8): 1, 5, 17, 85, 859, 4295, 14603, 73015.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
73015 has no famous special property in the usual lists (prime, square, cube, triangular, Fibonacci, palindrome, perfect), but it is still a composite number.
- 2
73015 is composite. Its prime factorisation is
- 3
The divisors add up to 92880; without 73015 itself that is 19865, so 73015 is deficient (19865 is less than 73015). Euler's totient φ(73015) = 54912 numbers up to 73015 share no factor with it.
- 4
The digits of 73015 add up to 16, and repeating that until one digit is left gives the digital root 7. The Collatz sequence (halve if even, else 3n+1) takes 218 steps to reach 1.
LaTeX source of the formulas on this page
\[ 73015 = 5 \times 17 \times 859 \]
73015 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 8 |
| Sum of divisors | 92880 |
| Euler totient φ(n) | 54912 |
| Square | 5331190225 |
| Cube | 389256854278375 |
| Square root | 270.212879 |
| Digit sum / digital root | 16 / 7 |
| Collatz steps to 1 | 218 |
| Scientific notation | 7.3015 × |
73015 in other forms
| Form | Value |
|---|---|
| In words | seventy-three thousand and fifteen |
| Binary (base 2) | 10001110100110111 |
| Octal (base 8) | 216467 |
| Hexadecimal (base 16) | 11D37 |
| Base 3 | 10201011021 |
| As time | 73015 seconds = 20 h 16 min 55 s |
Is 73015 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 3) | A number is divisible by 4 if the last two digits make a multiple of 4. |
| 5 | Yes (73015 ÷ 5 = 14603) | 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 5) | 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 7) | A number is divisible by 9 if the digits add up to a multiple of 9. |
| 10 | No (remainder 5) | 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 7) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 73015 a prime number?
No. 73015 = 5 × 17 × 859, so it is divisible by 5.
What are the factors of 73015?
1, 5, 17, 85, 859, 4295, 14603, 73015.
What is 73015 in binary?
10001110100110111 (hexadecimal 11D37, octal 216467).
What is the square root of 73015?
About 270.2129.
Is 73015 divisible by 3?
No. Its digits add up to 16, which is not a multiple of 3.
What is special about the number 73015?
It is a composite number with 8 divisors.