The number 33081
33081 is a composite number with 4 divisors. Its prime factorisation is 3 × 11027. Divisors (4): 1, 3, 11027, 33081.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 33081: a semiprime: 3 × 11027, the product of two primes.
- 2
33081 is composite. Its prime factorisation is
- 3
The divisors add up to 44112; without 33081 itself that is 11031, so 33081 is deficient (11031 is less than 33081). Euler's totient φ(33081) = 22052 numbers up to 33081 share no factor with it.
- 4
The digits of 33081 add up to 15, and repeating that until one digit is left gives the digital root 6. The Collatz sequence (halve if even, else 3n+1) takes 72 steps to reach 1.
LaTeX source of the formulas on this page
\[ 33081 = 3 \times 11027 \]
33081 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 4 |
| Sum of divisors | 44112 |
| Euler totient φ(n) | 22052 |
| Square | 1094352561 |
| Cube | 36202277070441 |
| Square root | 181.881830 |
| Digit sum / digital root | 15 / 6 |
| Collatz steps to 1 | 72 |
| Scientific notation | 3.3081 × |
33081 in other forms
| Form | Value |
|---|---|
| In words | thirty-three thousand and eighty-one |
| Binary (base 2) | 1000000100111001 |
| Octal (base 8) | 100471 |
| Hexadecimal (base 16) | 8139 |
| Base 3 | 1200101020 |
| As time | 33081 seconds = 9 h 11 min 21 s |
Is 33081 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 | Yes (33081 ÷ 3 = 11027) | A number is divisible by 3 if the digits add up to a multiple of 3. |
| 4 | No (remainder 1) | 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 3) | 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 1) | A number is divisible by 8 if the last three digits make a multiple of 8. |
| 9 | No (remainder 6) | 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 4) | A number is divisible by 11 if the alternating sum of the digits is a multiple of 11. |
| 12 | No (remainder 9) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 33081 a prime number?
No. 33081 = 3 × 11027, so it is divisible by 3.
What are the factors of 33081?
1, 3, 11027, 33081.
What is 33081 in binary?
1000000100111001 (hexadecimal 8139, octal 100471).
What is the square root of 33081?
About 181.8818.
Is 33081 divisible by 3?
Yes. Its digits add up to 15, a multiple of 3.
What is special about the number 33081?
33081 is a semiprime: 3 × 11027, the product of two primes.