The number 16771
16771 is a composite number with 4 divisors. Its prime factorisation is 31 × 541. Divisors (4): 1, 31, 541, 16771.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 16771: a semiprime: 31 × 541, the product of two primes.
- 2
16771 is composite. Its prime factorisation is
- 3
The divisors add up to 17344; without 16771 itself that is 573, so 16771 is deficient (573 is less than 16771). Euler's totient φ(16771) = 16200 numbers up to 16771 share no factor with it.
- 4
The digits of 16771 add up to 22, and repeating that until one digit is left gives the digital root 4. The Collatz sequence (halve if even, else 3n+1) takes 66 steps to reach 1.
LaTeX source of the formulas on this page
\[ 16771 = 31 \times 541 \]
16771 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 4 |
| Sum of divisors | 17344 |
| Euler totient φ(n) | 16200 |
| Square | 281266441 |
| Cube | 4717119482011 |
| Square root | 129.502896 |
| Digit sum / digital root | 22 / 4 |
| Collatz steps to 1 | 66 |
| Scientific notation | 1.6771 × |
16771 in other forms
| Form | Value |
|---|---|
| In words | sixteen thousand seven hundred and seventy-one |
| Binary (base 2) | 100000110000011 |
| Octal (base 8) | 40603 |
| Hexadecimal (base 16) | 4183 |
| Base 3 | 212000011 |
| As time | 16771 seconds = 4 h 39 min 31 s |
Is 16771 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 1) | 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 | No (remainder 1) | A number is divisible by 5 if the last digit is 0 or 5. |
| 6 | No (remainder 1) | 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 3) | A number is divisible by 8 if the last three digits make a multiple of 8. |
| 9 | No (remainder 4) | A number is divisible by 9 if the digits add up to a multiple of 9. |
| 10 | No (remainder 1) | A number is divisible by 10 if the last digit is 0. |
| 11 | No (remainder 7) | A number is divisible by 11 if the alternating sum of the digits is a multiple of 11. |
| 12 | No (remainder 7) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 16771 a prime number?
No. 16771 = 31 × 541, so it is divisible by 31.
What are the factors of 16771?
1, 31, 541, 16771.
What is 16771 in binary?
100000110000011 (hexadecimal 4183, octal 40603).
What is the square root of 16771?
About 129.5029.
Is 16771 divisible by 3?
No. Its digits add up to 22, which is not a multiple of 3.
What is special about the number 16771?
16771 is a semiprime: 31 × 541, the product of two primes.