The number 18074
18074 is a composite number with 8 divisors. Its prime factorisation is 2 × 7 × 1291. Divisors (8): 1, 2, 7, 14, 1291, 2582, 9037, 18074.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 18074: a happy number: repeatedly adding the squares of its digits reaches 1.
- 2
18074 is composite. Its prime factorisation is
- 3
The divisors add up to 31008; without 18074 itself that is 12934, so 18074 is deficient (12934 is less than 18074). Euler's totient φ(18074) = 7740 numbers up to 18074 share no factor with it.
- 4
The digits of 18074 add up to 20, and repeating that until one digit is left gives the digital root 2. The Collatz sequence (halve if even, else 3n+1) takes 40 steps to reach 1.
LaTeX source of the formulas on this page
\[ 18074 = 2 \times 7 \times 1291 \]
18074 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 8 |
| Sum of divisors | 31008 |
| Euler totient φ(n) | 7740 |
| Square | 326669476 |
| Cube | 5904224109224 |
| Square root | 134.439578 |
| Digit sum / digital root | 20 / 2 |
| Collatz steps to 1 | 40 |
| Scientific notation | 1.8074 × |
18074 in other forms
| Form | Value |
|---|---|
| In words | eighteen thousand and seventy-four |
| Binary (base 2) | 100011010011010 |
| Octal (base 8) | 43232 |
| Hexadecimal (base 16) | 469A |
| Base 3 | 220210102 |
| As time | 18074 seconds = 5 h 1 min 14 s |
Is 18074 divisible by 2 to 12?
| Divisor | Answer | Rule |
|---|---|---|
| 2 | Yes (18074 ÷ 2 = 9037) | 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 4) | 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 (18074 ÷ 7 = 2582) | 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 4) | A number is divisible by 10 if the last digit is 0. |
| 11 | No (remainder 1) | 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 18074 a prime number?
No. 18074 = 2 × 7 × 1291, so it is divisible by 2.
What are the factors of 18074?
1, 2, 7, 14, 1291, 2582, 9037, 18074.
What is 18074 in binary?
100011010011010 (hexadecimal 469A, octal 43232).
What is the square root of 18074?
About 134.4396.
Is 18074 divisible by 3?
No. Its digits add up to 20, which is not a multiple of 3.
What is special about the number 18074?
18074 is a happy number: repeatedly adding the squares of its digits reaches 1.