The number 16355
16355 is a composite number with 4 divisors. Its prime factorisation is 5 × 3271. Divisors (4): 1, 5, 3271, 16355.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 16355: a semiprime: 5 × 3271, the product of two primes.
- 2
16355 is composite. Its prime factorisation is
- 3
The divisors add up to 19632; without 16355 itself that is 3277, so 16355 is deficient (3277 is less than 16355). Euler's totient φ(16355) = 13080 numbers up to 16355 share no factor with it.
- 4
The digits of 16355 add up to 20, and repeating that until one digit is left gives the digital root 2. The Collatz sequence (halve if even, else 3n+1) takes 53 steps to reach 1.
LaTeX source of the formulas on this page
\[ 16355 = 5 \times 3271 \]
16355 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 4 |
| Sum of divisors | 19632 |
| Euler totient φ(n) | 13080 |
| Square | 267486025 |
| Cube | 4374733938875 |
| Square root | 127.886669 |
| Digit sum / digital root | 20 / 2 |
| Collatz steps to 1 | 53 |
| Scientific notation | 1.6355 × |
16355 in other forms
| Form | Value |
|---|---|
| In words | sixteen thousand three hundred and fifty-five |
| Binary (base 2) | 11111111100011 |
| Octal (base 8) | 37743 |
| Hexadecimal (base 16) | 3FE3 |
| Base 3 | 211102202 |
| As time | 16355 seconds = 4 h 32 min 35 s |
Is 16355 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 (16355 ÷ 5 = 3271) | 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 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 3) | A number is divisible by 8 if the last three digits make a multiple of 8. |
| 9 | No (remainder 2) | 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 9) | 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 16355 a prime number?
No. 16355 = 5 × 3271, so it is divisible by 5.
What are the factors of 16355?
1, 5, 3271, 16355.
What is 16355 in binary?
11111111100011 (hexadecimal 3FE3, octal 37743).
What is the square root of 16355?
About 127.8867.
Is 16355 divisible by 3?
No. Its digits add up to 20, which is not a multiple of 3.
What is special about the number 16355?
16355 is a semiprime: 5 × 3271, the product of two primes.