The number 16211
16211 is a composite number with 8 divisors. Its prime factorisation is 13 × 29 × 43. Divisors (8): 1, 13, 29, 43, 377, 559, 1247, 16211.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
16211 has no famous special property in the usual lists (prime, square, cube, triangular, Fibonacci, palindrome, perfect), but it is still a composite number.
- 2
16211 is composite. Its prime factorisation is
- 3
The divisors add up to 18480; without 16211 itself that is 2269, so 16211 is deficient (2269 is less than 16211). Euler's totient φ(16211) = 14112 numbers up to 16211 share no factor with it.
- 4
The digits of 16211 add up to 11, and repeating that until one digit is left gives the digital root 2. The Collatz sequence (halve if even, else 3n+1) takes 71 steps to reach 1.
LaTeX source of the formulas on this page
\[ 16211 = 13 \times 29 \times 43 \]
16211 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 8 |
| Sum of divisors | 18480 |
| Euler totient φ(n) | 14112 |
| Square | 262796521 |
| Cube | 4260194401931 |
| Square root | 127.322425 |
| Digit sum / digital root | 11 / 2 |
| Collatz steps to 1 | 71 |
| Scientific notation | 1.6211 × |
16211 in other forms
| Form | Value |
|---|---|
| In words | sixteen thousand two hundred and eleven |
| Binary (base 2) | 11111101010011 |
| Octal (base 8) | 37523 |
| Hexadecimal (base 16) | 3F53 |
| Base 3 | 211020102 |
| As time | 16211 seconds = 4 h 30 min 11 s |
Is 16211 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 1) | 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 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 2) | 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 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 16211 a prime number?
No. 16211 = 13 × 29 × 43, so it is divisible by 13.
What are the factors of 16211?
1, 13, 29, 43, 377, 559, 1247, 16211.
What is 16211 in binary?
11111101010011 (hexadecimal 3F53, octal 37523).
What is the square root of 16211?
About 127.3224.
Is 16211 divisible by 3?
No. Its digits add up to 11, which is not a multiple of 3.
What is special about the number 16211?
It is a composite number with 8 divisors.