The number 73423
73423 is a composite number with 8 divisors. Its prime factorisation is 7 × 17 × 617. Divisors (8): 1, 7, 17, 119, 617, 4319, 10489, 73423.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
73423 has no famous special property in the usual lists (prime, square, cube, triangular, Fibonacci, palindrome, perfect), but it is still a composite number.
- 2
73423 is composite. Its prime factorisation is
- 3
The divisors add up to 88992; without 73423 itself that is 15569, so 73423 is deficient (15569 is less than 73423). Euler's totient φ(73423) = 59136 numbers up to 73423 share no factor with it.
- 4
The digits of 73423 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 169 steps to reach 1.
LaTeX source of the formulas on this page
\[ 73423 = 7 \times 17 \times 617 \]
73423 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 8 |
| Sum of divisors | 88992 |
| Euler totient φ(n) | 59136 |
| Square | 5390936929 |
| Cube | 395818762137967 |
| Square root | 270.966788 |
| Digit sum / digital root | 19 / 1 |
| Collatz steps to 1 | 169 |
| Scientific notation | 7.3423 × |
73423 in other forms
| Form | Value |
|---|---|
| In words | seventy-three thousand four hundred and twenty-three |
| Binary (base 2) | 10001111011001111 |
| Octal (base 8) | 217317 |
| Hexadecimal (base 16) | 11ECF |
| Base 3 | 10201201101 |
| As time | 73423 seconds = 20 h 23 min 43 s |
Is 73423 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 | No (remainder 3) | 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 | Yes (73423 ÷ 7 = 10489) | 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 1) | A number is divisible by 9 if the digits add up to a multiple of 9. |
| 10 | No (remainder 3) | A number is divisible by 10 if the last digit is 0. |
| 11 | No (remainder 9) | 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 73423 a prime number?
No. 73423 = 7 × 17 × 617, so it is divisible by 7.
What are the factors of 73423?
1, 7, 17, 119, 617, 4319, 10489, 73423.
What is 73423 in binary?
10001111011001111 (hexadecimal 11ECF, octal 217317).
What is the square root of 73423?
About 270.9668.
Is 73423 divisible by 3?
No. Its digits add up to 19, which is not a multiple of 3.
What is special about the number 73423?
It is a composite number with 8 divisors.