The number 18122
18122 is a composite number with 16 divisors. Its prime factorisation is 2 × 13 × 17 × 41. Divisors (16): 1, 2, 13, 17, 26, 34, 41, 82, 221, 442, 533, 697, 1066, 1394, 9061, 18122.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
18122 has no famous special property in the usual lists (prime, square, cube, triangular, Fibonacci, palindrome, perfect), but it is still a composite number.
- 2
18122 is composite. Its prime factorisation is
- 3
The divisors add up to 31752; without 18122 itself that is 13630, so 18122 is deficient (13630 is less than 18122). Euler's totient φ(18122) = 7680 numbers up to 18122 share no factor with it.
- 4
The digits of 18122 add up to 14, and repeating that until one digit is left gives the digital root 5. The Collatz sequence (halve if even, else 3n+1) takes 66 steps to reach 1.
LaTeX source of the formulas on this page
\[ 18122 = 2 \times 13 \times 17 \times 41 \]
18122 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 16 |
| Sum of divisors | 31752 |
| Euler totient φ(n) | 7680 |
| Square | 328406884 |
| Cube | 5951389551848 |
| Square root | 134.617978 |
| Digit sum / digital root | 14 / 5 |
| Collatz steps to 1 | 66 |
| Scientific notation | 1.8122 × |
18122 in other forms
| Form | Value |
|---|---|
| In words | eighteen thousand one hundred and twenty-two |
| Binary (base 2) | 100011011001010 |
| Octal (base 8) | 43312 |
| Hexadecimal (base 16) | 46CA |
| Base 3 | 220212012 |
| As time | 18122 seconds = 5 h 2 min 2 s |
Is 18122 divisible by 2 to 12?
| Divisor | Answer | Rule |
|---|---|---|
| 2 | Yes (18122 ÷ 2 = 9061) | A number is divisible by 2 if the last digit is even (0, 2, 4, 6, 8). |
| 3 | No (remainder 2) | 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 2) | 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 2) | A number is divisible by 8 if the last three digits make a multiple of 8. |
| 9 | No (remainder 5) | 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 5) | A number is divisible by 11 if the alternating sum of the digits is a multiple of 11. |
| 12 | No (remainder 2) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 18122 a prime number?
No. 18122 = 2 × 13 × 17 × 41, so it is divisible by 2.
What are the factors of 18122?
1, 2, 13, 17, 26, 34, 41, 82, 221, 442, 533, 697, 1066, 1394, 9061, 18122.
What is 18122 in binary?
100011011001010 (hexadecimal 46CA, octal 43312).
What is the square root of 18122?
About 134.6180.
Is 18122 divisible by 3?
No. Its digits add up to 14, which is not a multiple of 3.
What is special about the number 18122?
It is a composite number with 16 divisors.