The number 18033
18033 is a composite number with 4 divisors. Its prime factorisation is 3 × 6011. Divisors (4): 1, 3, 6011, 18033.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 18033: a semiprime: 3 × 6011, the product of two primes.
- 2
18033 is composite. Its prime factorisation is
- 3
The divisors add up to 24048; without 18033 itself that is 6015, so 18033 is deficient (6015 is less than 18033). Euler's totient φ(18033) = 12020 numbers up to 18033 share no factor with it.
- 4
The digits of 18033 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 48 steps to reach 1.
LaTeX source of the formulas on this page
\[ 18033 = 3 \times 6011 \]
18033 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 4 |
| Sum of divisors | 24048 |
| Euler totient φ(n) | 12020 |
| Square | 325189089 |
| Cube | 5864134841937 |
| Square root | 134.287006 |
| Digit sum / digital root | 15 / 6 |
| Collatz steps to 1 | 48 |
| Scientific notation | 1.8033 × |
18033 in other forms
| Form | Value |
|---|---|
| In words | eighteen thousand and thirty-three |
| Binary (base 2) | 100011001110001 |
| Octal (base 8) | 43161 |
| Hexadecimal (base 16) | 4671 |
| Base 3 | 220201220 |
| As time | 18033 seconds = 5 h 0 min 33 s |
Is 18033 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 (18033 ÷ 3 = 6011) | 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 3) | 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 1) | 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 3) | 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 18033 a prime number?
No. 18033 = 3 × 6011, so it is divisible by 3.
What are the factors of 18033?
1, 3, 6011, 18033.
What is 18033 in binary?
100011001110001 (hexadecimal 4671, octal 43161).
What is the square root of 18033?
About 134.2870.
Is 18033 divisible by 3?
Yes. Its digits add up to 15, a multiple of 3.
What is special about the number 18033?
18033 is a semiprime: 3 × 6011, the product of two primes.