The number 16394
16394 is a composite number with 8 divisors. Its prime factorisation is 2 × 7 × 1171. Divisors (8): 1, 2, 7, 14, 1171, 2342, 8197, 16394.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
16394 has no famous special property in the usual lists (prime, square, cube, triangular, Fibonacci, palindrome, perfect), but it is still a composite number.
- 2
16394 is composite. Its prime factorisation is
- 3
The divisors add up to 28128; without 16394 itself that is 11734, so 16394 is deficient (11734 is less than 16394). Euler's totient φ(16394) = 7020 numbers up to 16394 share no factor with it.
- 4
The digits of 16394 add up to 23, and repeating that until one digit is left gives the digital root 5. The Collatz sequence (halve if even, else 3n+1) takes 159 steps to reach 1.
LaTeX source of the formulas on this page
\[ 16394 = 2 \times 7 \times 1171 \]
16394 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 8 |
| Sum of divisors | 28128 |
| Euler totient φ(n) | 7020 |
| Square | 268763236 |
| Cube | 4406104490984 |
| Square root | 128.039057 |
| Digit sum / digital root | 23 / 5 |
| Collatz steps to 1 | 159 |
| Scientific notation | 1.6394 × |
16394 in other forms
| Form | Value |
|---|---|
| In words | sixteen thousand three hundred and ninety-four |
| Binary (base 2) | 100000000001010 |
| Octal (base 8) | 40012 |
| Hexadecimal (base 16) | 400A |
| Base 3 | 211111012 |
| As time | 16394 seconds = 4 h 33 min 14 s |
Is 16394 divisible by 2 to 12?
| Divisor | Answer | Rule |
|---|---|---|
| 2 | Yes (16394 ÷ 2 = 8197) | 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 4) | 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 | Yes (16394 ÷ 7 = 2342) | 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 4) | A number is divisible by 10 if the last digit is 0. |
| 11 | No (remainder 4) | 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 16394 a prime number?
No. 16394 = 2 × 7 × 1171, so it is divisible by 2.
What are the factors of 16394?
1, 2, 7, 14, 1171, 2342, 8197, 16394.
What is 16394 in binary?
100000000001010 (hexadecimal 400A, octal 40012).
What is the square root of 16394?
About 128.0391.
Is 16394 divisible by 3?
No. Its digits add up to 23, which is not a multiple of 3.
What is special about the number 16394?
It is a composite number with 8 divisors.