The number 18026
18026 is a composite number with 4 divisors. Its prime factorisation is 2 × 9013. Divisors (4): 1, 2, 9013, 18026.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 18026: a semiprime: 2 × 9013, the product of two primes.
- 2
18026 is composite. Its prime factorisation is
- 3
The divisors add up to 27042; without 18026 itself that is 9016, so 18026 is deficient (9016 is less than 18026). Euler's totient φ(18026) = 9012 numbers up to 18026 share no factor with it.
- 4
The digits of 18026 add up to 17, and repeating that until one digit is left gives the digital root 8. The Collatz sequence (halve if even, else 3n+1) takes 48 steps to reach 1.
LaTeX source of the formulas on this page
\[ 18026 = 2 \times 9013 \]
18026 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 4 |
| Sum of divisors | 27042 |
| Euler totient φ(n) | 9012 |
| Square | 324936676 |
| Cube | 5857308521576 |
| Square root | 134.260940 |
| Digit sum / digital root | 17 / 8 |
| Collatz steps to 1 | 48 |
| Scientific notation | 1.8026 × |
18026 in other forms
| Form | Value |
|---|---|
| In words | eighteen thousand and twenty-six |
| Binary (base 2) | 100011001101010 |
| Octal (base 8) | 43152 |
| Hexadecimal (base 16) | 466A |
| Base 3 | 220201122 |
| As time | 18026 seconds = 5 h 0 min 26 s |
Is 18026 divisible by 2 to 12?
| Divisor | Answer | Rule |
|---|---|---|
| 2 | Yes (18026 ÷ 2 = 9013) | 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 1) | 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 | No (remainder 1) | 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 8) | A number is divisible by 9 if the digits add up to a multiple of 9. |
| 10 | No (remainder 6) | 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 2) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 18026 a prime number?
No. 18026 = 2 × 9013, so it is divisible by 2.
What are the factors of 18026?
1, 2, 9013, 18026.
What is 18026 in binary?
100011001101010 (hexadecimal 466A, octal 43152).
What is the square root of 18026?
About 134.2609.
Is 18026 divisible by 3?
No. Its digits add up to 17, which is not a multiple of 3.
What is special about the number 18026?
18026 is a semiprime: 2 × 9013, the product of two primes.