The number 43018
43018 is a composite number with 8 divisors. Its prime factorisation is 2 × 137 × 157. Divisors (8): 1, 2, 137, 157, 274, 314, 21509, 43018.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
43018 has no famous special property in the usual lists (prime, square, cube, triangular, Fibonacci, palindrome, perfect), but it is still a composite number.
- 2
43018 is composite. Its prime factorisation is
- 3
The divisors add up to 65412; without 43018 itself that is 22394, so 43018 is deficient (22394 is less than 43018). Euler's totient φ(43018) = 21216 numbers up to 43018 share no factor with it.
- 4
The digits of 43018 add up to 16, and repeating that until one digit is left gives the digital root 7. The Collatz sequence (halve if even, else 3n+1) takes 75 steps to reach 1.
LaTeX source of the formulas on this page
\[ 43018 = 2 \times 137 \times 157 \]
43018 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 8 |
| Sum of divisors | 65412 |
| Euler totient φ(n) | 21216 |
| Square | 1850548324 |
| Cube | 79606887801832 |
| Square root | 207.407811 |
| Digit sum / digital root | 16 / 7 |
| Collatz steps to 1 | 75 |
| Scientific notation | 4.3018 × |
43018 in other forms
| Form | Value |
|---|---|
| In words | forty-three thousand and eighteen |
| Binary (base 2) | 1010100000001010 |
| Octal (base 8) | 124012 |
| Hexadecimal (base 16) | A80A |
| Base 3 | 2012000021 |
| As time | 43018 seconds = 11 h 56 min 58 s |
Is 43018 divisible by 2 to 12?
| Divisor | Answer | Rule |
|---|---|---|
| 2 | Yes (43018 ÷ 2 = 21509) | A number is divisible by 2 if the last digit is even (0, 2, 4, 6, 8). |
| 3 | No (remainder 1) | 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 | No (remainder 4) | A number is divisible by 6 if it is divisible by both 2 and 3. |
| 7 | No (remainder 3) | 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 7) | 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 8) | A number is divisible by 11 if the alternating sum of the digits is a multiple of 11. |
| 12 | No (remainder 10) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 43018 a prime number?
No. 43018 = 2 × 137 × 157, so it is divisible by 2.
What are the factors of 43018?
1, 2, 137, 157, 274, 314, 21509, 43018.
What is 43018 in binary?
1010100000001010 (hexadecimal A80A, octal 124012).
What is the square root of 43018?
About 207.4078.
Is 43018 divisible by 3?
No. Its digits add up to 16, which is not a multiple of 3.
What is special about the number 43018?
It is a composite number with 8 divisors.