The number 11018
11018 is a composite number with 8 divisors. Its prime factorisation is 2 × 7 × 787. Divisors (8): 1, 2, 7, 14, 787, 1574, 5509, 11018.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
11018 has no famous special property in the usual lists (prime, square, cube, triangular, Fibonacci, palindrome, perfect), but it is still a composite number.
- 2
11018 is composite. Its prime factorisation is
- 3
The divisors add up to 18912; without 11018 itself that is 7894, so 11018 is deficient (7894 is less than 11018). Euler's totient φ(11018) = 4716 numbers up to 11018 share no factor with it.
- 4
The digits of 11018 add up to 11, and repeating that until one digit is left gives the digital root 2. The Collatz sequence (halve if even, else 3n+1) takes 161 steps to reach 1.
LaTeX source of the formulas on this page
\[ 11018 = 2 \times 7 \times 787 \]
11018 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 8 |
| Sum of divisors | 18912 |
| Euler totient φ(n) | 4716 |
| Square | 121396324 |
| Cube | 1337544697832 |
| Square root | 104.966661 |
| Digit sum / digital root | 11 / 2 |
| Collatz steps to 1 | 161 |
| Scientific notation | 1.1018 × |
11018 in other forms
| Form | Value |
|---|---|
| In words | eleven thousand and eighteen |
| Binary (base 2) | 10101100001010 |
| Octal (base 8) | 25412 |
| Hexadecimal (base 16) | 2B0A |
| Base 3 | 120010002 |
| As time | 11018 seconds = 3 h 3 min 38 s |
Is 11018 divisible by 2 to 12?
| Divisor | Answer | Rule |
|---|---|---|
| 2 | Yes (11018 ÷ 2 = 5509) | A number is divisible by 2 if the last digit is even (0, 2, 4, 6, 8). |
| 3 | No (remainder 2) | 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 2) | A number is divisible by 6 if it is divisible by both 2 and 3. |
| 7 | Yes (11018 ÷ 7 = 1574) | 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 2) | 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 7) | A number is divisible by 11 if the alternating sum of the digits is a multiple of 11. |
| 12 | No (remainder 2) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 11018 a prime number?
No. 11018 = 2 × 7 × 787, so it is divisible by 2.
What are the factors of 11018?
1, 2, 7, 14, 787, 1574, 5509, 11018.
What is 11018 in binary?
10101100001010 (hexadecimal 2B0A, octal 25412).
What is the square root of 11018?
About 104.9667.
Is 11018 divisible by 3?
No. Its digits add up to 11, which is not a multiple of 3.
What is special about the number 11018?
It is a composite number with 8 divisors.