The number 16739
16739 is a composite number with 4 divisors. Its prime factorisation is 19 × 881. Divisors (4): 1, 19, 881, 16739.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 16739: a happy number: repeatedly adding the squares of its digits reaches 1; a semiprime: 19 × 881, the product of two primes.
- 2
16739 is composite. Its prime factorisation is
- 3
The divisors add up to 17640; without 16739 itself that is 901, so 16739 is deficient (901 is less than 16739). Euler's totient φ(16739) = 15840 numbers up to 16739 share no factor with it.
- 4
The digits of 16739 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 40 steps to reach 1.
LaTeX source of the formulas on this page
\[ 16739 = 19 \times 881 \]
16739 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 4 |
| Sum of divisors | 17640 |
| Euler totient φ(n) | 15840 |
| Square | 280194121 |
| Cube | 4690169391419 |
| Square root | 129.379287 |
| Digit sum / digital root | 26 / 8 |
| Collatz steps to 1 | 40 |
| Scientific notation | 1.6739 × |
16739 in other forms
| Form | Value |
|---|---|
| In words | sixteen thousand seven hundred and thirty-nine |
| Binary (base 2) | 100000101100011 |
| Octal (base 8) | 40543 |
| Hexadecimal (base 16) | 4163 |
| Base 3 | 211221222 |
| As time | 16739 seconds = 4 h 38 min 59 s |
Is 16739 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 | No (remainder 4) | 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 2) | 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 9) | A number is divisible by 10 if the last digit is 0. |
| 11 | No (remainder 8) | 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 16739 a prime number?
No. 16739 = 19 × 881, so it is divisible by 19.
What are the factors of 16739?
1, 19, 881, 16739.
What is 16739 in binary?
100000101100011 (hexadecimal 4163, octal 40543).
What is the square root of 16739?
About 129.3793.
Is 16739 divisible by 3?
No. Its digits add up to 26, which is not a multiple of 3.
What is special about the number 16739?
16739 is a happy number: repeatedly adding the squares of its digits reaches 1; a semiprime: 19 × 881, the product of two primes.