The number 15422
15422 is a composite number with 8 divisors. Its prime factorisation is 2 × 11 × 701. Divisors (8): 1, 2, 11, 22, 701, 1402, 7711, 15422.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
15422 has no famous special property in the usual lists (prime, square, cube, triangular, Fibonacci, palindrome, perfect), but it is still a composite number.
- 2
15422 is composite. Its prime factorisation is
- 3
The divisors add up to 25272; without 15422 itself that is 9850, so 15422 is deficient (9850 is less than 15422). Euler's totient φ(15422) = 7000 numbers up to 15422 share no factor with it.
- 4
The digits of 15422 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 133 steps to reach 1.
LaTeX source of the formulas on this page
\[ 15422 = 2 \times 11 \times 701 \]
15422 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 8 |
| Sum of divisors | 25272 |
| Euler totient φ(n) | 7000 |
| Square | 237838084 |
| Cube | 3667938931448 |
| Square root | 124.185345 |
| Digit sum / digital root | 14 / 5 |
| Collatz steps to 1 | 133 |
| Scientific notation | 1.5422 × |
15422 in other forms
| Form | Value |
|---|---|
| In words | fifteen thousand four hundred and twenty-two |
| Binary (base 2) | 11110000111110 |
| Octal (base 8) | 36076 |
| Hexadecimal (base 16) | 3C3E |
| Base 3 | 210011012 |
| As time | 15422 seconds = 4 h 17 min 2 s |
Is 15422 divisible by 2 to 12?
| Divisor | Answer | Rule |
|---|---|---|
| 2 | Yes (15422 ÷ 2 = 7711) | 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 1) | 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 6) | 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 | Yes (15422 ÷ 11 = 1402) | 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 15422 a prime number?
No. 15422 = 2 × 11 × 701, so it is divisible by 2.
What are the factors of 15422?
1, 2, 11, 22, 701, 1402, 7711, 15422.
What is 15422 in binary?
11110000111110 (hexadecimal 3C3E, octal 36076).
What is the square root of 15422?
About 124.1853.
Is 15422 divisible by 3?
No. Its digits add up to 14, which is not a multiple of 3.
What is special about the number 15422?
It is a composite number with 8 divisors.