The number 16955
16955 is a composite number with 4 divisors. Its prime factorisation is 5 × 3391. Divisors (4): 1, 5, 3391, 16955.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 16955: a semiprime: 5 × 3391, the product of two primes.
- 2
16955 is composite. Its prime factorisation is
- 3
The divisors add up to 20352; without 16955 itself that is 3397, so 16955 is deficient (3397 is less than 16955). Euler's totient φ(16955) = 13560 numbers up to 16955 share no factor with it.
- 4
The digits of 16955 add up to 26, and repeating that until one digit is left gives the digital root 8. The Collatz sequence (halve if even, else 3n+1) takes 84 steps to reach 1.
LaTeX source of the formulas on this page
\[ 16955 = 5 \times 3391 \]
16955 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 4 |
| Sum of divisors | 20352 |
| Euler totient φ(n) | 13560 |
| Square | 287472025 |
| Cube | 4874088183875 |
| Square root | 130.211367 |
| Digit sum / digital root | 26 / 8 |
| Collatz steps to 1 | 84 |
| Scientific notation | 1.6955 × |
16955 in other forms
| Form | Value |
|---|---|
| In words | sixteen thousand nine hundred and fifty-five |
| Binary (base 2) | 100001000111011 |
| Octal (base 8) | 41073 |
| Hexadecimal (base 16) | 423B |
| Base 3 | 212020222 |
| As time | 16955 seconds = 4 h 42 min 35 s |
Is 16955 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 | No (remainder 2) | 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 | Yes (16955 ÷ 5 = 3391) | A number is divisible by 5 if the last digit is 0 or 5. |
| 6 | No (remainder 5) | 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 3) | A number is divisible by 8 if the last three digits make a multiple of 8. |
| 9 | No (remainder 8) | A number is divisible by 9 if the digits add up to a multiple of 9. |
| 10 | No (remainder 5) | 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 11) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 16955 a prime number?
No. 16955 = 5 × 3391, so it is divisible by 5.
What are the factors of 16955?
1, 5, 3391, 16955.
What is 16955 in binary?
100001000111011 (hexadecimal 423B, octal 41073).
What is the square root of 16955?
About 130.2114.
Is 16955 divisible by 3?
No. Its digits add up to 26, which is not a multiple of 3.
What is special about the number 16955?
16955 is a semiprime: 5 × 3391, the product of two primes.