The number 18030
18030 is a composite number with 16 divisors. Its prime factorisation is 2 × 3 × 5 × 601. Divisors (16): 1, 2, 3, 5, 6, 10, 15, 30, 601, 1202, 1803, 3005, 3606, 6010, 9015, 18030.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
18030 has no famous special property in the usual lists (prime, square, cube, triangular, Fibonacci, palindrome, perfect), but it is still a composite number.
- 2
18030 is composite. Its prime factorisation is
- 3
The divisors add up to 43344; without 18030 itself that is 25314, so 18030 is abundant (25314 is more than 18030). Euler's totient φ(18030) = 4800 numbers up to 18030 share no factor with it.
- 4
The digits of 18030 add up to 12, and repeating that until one digit is left gives the digital root 3. The Collatz sequence (halve if even, else 3n+1) takes 92 steps to reach 1.
LaTeX source of the formulas on this page
\[ 18030 = 2 \times 3 \times 5 \times 601 \]
18030 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 16 |
| Sum of divisors | 43344 |
| Euler totient φ(n) | 4800 |
| Square | 325080900 |
| Cube | 5861208627000 |
| Square root | 134.275836 |
| Digit sum / digital root | 12 / 3 |
| Collatz steps to 1 | 92 |
| Scientific notation | 1.803 × |
18030 in other forms
| Form | Value |
|---|---|
| In words | eighteen thousand and thirty |
| Binary (base 2) | 100011001101110 |
| Octal (base 8) | 43156 |
| Hexadecimal (base 16) | 466E |
| Base 3 | 220201210 |
| As time | 18030 seconds = 5 h 0 min 30 s |
Is 18030 divisible by 2 to 12?
| Divisor | Answer | Rule |
|---|---|---|
| 2 | Yes (18030 ÷ 2 = 9015) | A number is divisible by 2 if the last digit is even (0, 2, 4, 6, 8). |
| 3 | Yes (18030 ÷ 3 = 6010) | A number is divisible by 3 if the digits add up to a multiple of 3. |
| 4 | No (remainder 2) | A number is divisible by 4 if the last two digits make a multiple of 4. |
| 5 | Yes (18030 ÷ 5 = 3606) | A number is divisible by 5 if the last digit is 0 or 5. |
| 6 | Yes (18030 ÷ 6 = 3005) | A number is divisible by 6 if it is divisible by both 2 and 3. |
| 7 | No (remainder 5) | 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 6) | A number is divisible by 8 if the last three digits make a multiple of 8. |
| 9 | No (remainder 3) | A number is divisible by 9 if the digits add up to a multiple of 9. |
| 10 | Yes (18030 ÷ 10 = 1803) | A number is divisible by 10 if the last digit is 0. |
| 11 | No (remainder 1) | A number is divisible by 11 if the alternating sum of the digits is a multiple of 11. |
| 12 | No (remainder 6) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 18030 a prime number?
No. 18030 = 2 × 3 × 5 × 601, so it is divisible by 2.
What are the factors of 18030?
1, 2, 3, 5, 6, 10, 15, 30, 601, 1202, 1803, 3005, 3606, 6010, 9015, 18030.
What is 18030 in binary?
100011001101110 (hexadecimal 466E, octal 43156).
What is the square root of 18030?
About 134.2758.
Is 18030 divisible by 3?
Yes. Its digits add up to 12, a multiple of 3.
What is special about the number 18030?
It is a composite number with 16 divisors.