The number 30018
30018 is a composite number with 8 divisors. Its prime factorisation is 2 × 3 × 5003. Divisors (8): 1, 2, 3, 6, 5003, 10006, 15009, 30018.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
30018 has no famous special property in the usual lists (prime, square, cube, triangular, Fibonacci, palindrome, perfect), but it is still a composite number.
- 2
30018 is composite. Its prime factorisation is
- 3
The divisors add up to 60048; without 30018 itself that is 30030, so 30018 is abundant (30030 is more than 30018). Euler's totient φ(30018) = 10004 numbers up to 30018 share no factor with it.
- 4
The digits of 30018 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 116 steps to reach 1.
LaTeX source of the formulas on this page
\[ 30018 = 2 \times 3 \times 5003 \]
30018 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 8 |
| Sum of divisors | 60048 |
| Euler totient φ(n) | 10004 |
| Square | 901080324 |
| Cube | 27048629165832 |
| Square root | 173.257034 |
| Digit sum / digital root | 12 / 3 |
| Collatz steps to 1 | 116 |
| Scientific notation | 3.0018 × |
30018 in other forms
| Form | Value |
|---|---|
| In words | thirty thousand and eighteen |
| Binary (base 2) | 111010101000010 |
| Octal (base 8) | 72502 |
| Hexadecimal (base 16) | 7542 |
| Base 3 | 1112011210 |
| As time | 30018 seconds = 8 h 20 min 18 s |
Is 30018 divisible by 2 to 12?
| Divisor | Answer | Rule |
|---|---|---|
| 2 | Yes (30018 ÷ 2 = 15009) | A number is divisible by 2 if the last digit is even (0, 2, 4, 6, 8). |
| 3 | Yes (30018 ÷ 3 = 10006) | 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 | No (remainder 3) | A number is divisible by 5 if the last digit is 0 or 5. |
| 6 | Yes (30018 ÷ 6 = 5003) | 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 2) | 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 | No (remainder 8) | A number is divisible by 10 if the last digit is 0. |
| 11 | No (remainder 10) | 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 30018 a prime number?
No. 30018 = 2 × 3 × 5003, so it is divisible by 2.
What are the factors of 30018?
1, 2, 3, 6, 5003, 10006, 15009, 30018.
What is 30018 in binary?
111010101000010 (hexadecimal 7542, octal 72502).
What is the square root of 30018?
About 173.2570.
Is 30018 divisible by 3?
Yes. Its digits add up to 12, a multiple of 3.
What is special about the number 30018?
It is a composite number with 8 divisors.