The number 84018
84018 is a composite number with 32 divisors. Its prime factorisation is 2 × 3 × 11 × 19 × 67. Divisors (32): 1, 2, 3, 6, 11, 19, 22, 33, 38, 57, 66, 67, 114, 134, 201, 209 … 84018.
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How to work it out
- 1
84018 has no famous special property in the usual lists (prime, square, cube, triangular, Fibonacci, palindrome, perfect), but it is still a composite number.
- 2
84018 is composite. Its prime factorisation is
- 3
The divisors add up to 195840; without 84018 itself that is 111822, so 84018 is abundant (111822 is more than 84018). Euler's totient φ(84018) = 23760 numbers up to 84018 share no factor with it.
- 4
The digits of 84018 add up to 21, and repeating that until one digit is left gives the digital root 3. The Collatz sequence (halve if even, else 3n+1) takes 107 steps to reach 1.
LaTeX source of the formulas on this page
\[ 84018 = 2 \times 3 \times 11 \times 19 \times 67 \]
84018 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 32 |
| Sum of divisors | 195840 |
| Euler totient φ(n) | 23760 |
| Square | 7059024324 |
| Cube | 593085105653832 |
| Square root | 289.858586 |
| Digit sum / digital root | 21 / 3 |
| Collatz steps to 1 | 107 |
| Scientific notation | 8.4018 × |
84018 in other forms
| Form | Value |
|---|---|
| In words | eighty-four thousand and eighteen |
| Binary (base 2) | 10100100000110010 |
| Octal (base 8) | 244062 |
| Hexadecimal (base 16) | 14832 |
| Base 3 | 11021020210 |
| As time | 84018 seconds = 23 h 20 min 18 s |
Is 84018 divisible by 2 to 12?
| Divisor | Answer | Rule |
|---|---|---|
| 2 | Yes (84018 ÷ 2 = 42009) | A number is divisible by 2 if the last digit is even (0, 2, 4, 6, 8). |
| 3 | Yes (84018 ÷ 3 = 28006) | 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 (84018 ÷ 6 = 14003) | A number is divisible by 6 if it is divisible by both 2 and 3. |
| 7 | No (remainder 4) | 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 | Yes (84018 ÷ 11 = 7638) | 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 84018 a prime number?
No. 84018 = 2 × 3 × 11 × 19 × 67, so it is divisible by 2.
What are the factors of 84018?
1, 2, 3, 6, 11, 19, 22, 33, 38, 57, 66, 67, 114, 134, 201, 209, 402, 418, 627, 737, 1254, 1273, 1474, 2211, 2546, 3819, 4422, 7638, 14003, 28006, 42009, 84018.
What is 84018 in binary?
10100100000110010 (hexadecimal 14832, octal 244062).
What is the square root of 84018?
About 289.8586.
Is 84018 divisible by 3?
Yes. Its digits add up to 21, a multiple of 3.
What is special about the number 84018?
It is a composite number with 32 divisors.