The number 73443
73443 is a composite number with 4 divisors. Its prime factorisation is 3 × 24481. Divisors (4): 1, 3, 24481, 73443.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 73443: a semiprime: 3 × 24481, the product of two primes.
- 2
73443 is composite. Its prime factorisation is
- 3
The divisors add up to 97928; without 73443 itself that is 24485, so 73443 is deficient (24485 is less than 73443). Euler's totient φ(73443) = 48960 numbers up to 73443 share no factor with it.
- 4
The digits of 73443 add up to 21, and repeating that until one digit is left gives the digital root 3. The Collatz sequence (halve if even, else 3n+1) takes 63 steps to reach 1.
LaTeX source of the formulas on this page
\[ 73443 = 3 \times 24481 \]
73443 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 4 |
| Sum of divisors | 97928 |
| Euler totient φ(n) | 48960 |
| Square | 5393874249 |
| Cube | 396142306469307 |
| Square root | 271.003690 |
| Digit sum / digital root | 21 / 3 |
| Collatz steps to 1 | 63 |
| Scientific notation | 7.3443 × |
73443 in other forms
| Form | Value |
|---|---|
| In words | seventy-three thousand four hundred and forty-three |
| Binary (base 2) | 10001111011100011 |
| Octal (base 8) | 217343 |
| Hexadecimal (base 16) | 11EE3 |
| Base 3 | 10201202010 |
| As time | 73443 seconds = 20 h 24 min 3 s |
Is 73443 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 | Yes (73443 ÷ 3 = 24481) | 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 3) | A number is divisible by 6 if it is divisible by both 2 and 3. |
| 7 | No (remainder 6) | 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 3) | A number is divisible by 8 if the last three digits make a multiple of 8. |
| 9 | No (remainder 3) | 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 7) | A number is divisible by 11 if the alternating sum of the digits is a multiple of 11. |
| 12 | No (remainder 3) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 73443 a prime number?
No. 73443 = 3 × 24481, so it is divisible by 3.
What are the factors of 73443?
1, 3, 24481, 73443.
What is 73443 in binary?
10001111011100011 (hexadecimal 11EE3, octal 217343).
What is the square root of 73443?
About 271.0037.
Is 73443 divisible by 3?
Yes. Its digits add up to 21, a multiple of 3.
What is special about the number 73443?
73443 is a semiprime: 3 × 24481, the product of two primes.