The number 18322
18322 is a composite number with 4 divisors. Its prime factorisation is 2 × 9161. Divisors (4): 1, 2, 9161, 18322.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 18322: a happy number: repeatedly adding the squares of its digits reaches 1; a semiprime: 2 × 9161, the product of two primes.
- 2
18322 is composite. Its prime factorisation is
- 3
The divisors add up to 27486; without 18322 itself that is 9164, so 18322 is deficient (9164 is less than 18322). Euler's totient φ(18322) = 9160 numbers up to 18322 share no factor with it.
- 4
The digits of 18322 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 154 steps to reach 1.
LaTeX source of the formulas on this page
\[ 18322 = 2 \times 9161 \]
18322 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 4 |
| Sum of divisors | 27486 |
| Euler totient φ(n) | 9160 |
| Square | 335695684 |
| Cube | 6150616322248 |
| Square root | 135.358783 |
| Digit sum / digital root | 16 / 7 |
| Collatz steps to 1 | 154 |
| Scientific notation | 1.8322 × |
18322 in other forms
| Form | Value |
|---|---|
| In words | eighteen thousand three hundred and twenty-two |
| Binary (base 2) | 100011110010010 |
| Octal (base 8) | 43622 |
| Hexadecimal (base 16) | 4792 |
| Base 3 | 221010121 |
| As time | 18322 seconds = 5 h 5 min 22 s |
Is 18322 divisible by 2 to 12?
| Divisor | Answer | Rule |
|---|---|---|
| 2 | Yes (18322 ÷ 2 = 9161) | 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 2) | 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 3) | 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 2) | 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 10) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 18322 a prime number?
No. 18322 = 2 × 9161, so it is divisible by 2.
What are the factors of 18322?
1, 2, 9161, 18322.
What is 18322 in binary?
100011110010010 (hexadecimal 4792, octal 43622).
What is the square root of 18322?
About 135.3588.
Is 18322 divisible by 3?
No. Its digits add up to 16, which is not a multiple of 3.
What is special about the number 18322?
18322 is a happy number: repeatedly adding the squares of its digits reaches 1; a semiprime: 2 × 9161, the product of two primes.