The number 74018
74018 is a composite number with 16 divisors. Its prime factorisation is 2 × 7 × 17 × 311. Divisors (16): 1, 2, 7, 14, 17, 34, 119, 238, 311, 622, 2177, 4354, 5287, 10574, 37009, 74018.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 74018: a happy number: repeatedly adding the squares of its digits reaches 1.
- 2
74018 is composite. Its prime factorisation is
- 3
The divisors add up to 134784; without 74018 itself that is 60766, so 74018 is deficient (60766 is less than 74018). Euler's totient φ(74018) = 29760 numbers up to 74018 share no factor with it.
- 4
The digits of 74018 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 94 steps to reach 1.
LaTeX source of the formulas on this page
\[ 74018 = 2 \times 7 \times 17 \times 311 \]
74018 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 16 |
| Sum of divisors | 134784 |
| Euler totient φ(n) | 29760 |
| Square | 5478664324 |
| Cube | 405519775933832 |
| Square root | 272.062493 |
| Digit sum / digital root | 20 / 2 |
| Collatz steps to 1 | 94 |
| Scientific notation | 7.4018 × |
74018 in other forms
| Form | Value |
|---|---|
| In words | seventy-four thousand and eighteen |
| Binary (base 2) | 10010000100100010 |
| Octal (base 8) | 220442 |
| Hexadecimal (base 16) | 12122 |
| Base 3 | 10202112102 |
| As time | 74018 seconds = 20 h 33 min 38 s |
Is 74018 divisible by 2 to 12?
| Divisor | Answer | Rule |
|---|---|---|
| 2 | Yes (74018 ÷ 2 = 37009) | 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 (74018 ÷ 7 = 10574) | 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 10) | 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 74018 a prime number?
No. 74018 = 2 × 7 × 17 × 311, so it is divisible by 2.
What are the factors of 74018?
1, 2, 7, 14, 17, 34, 119, 238, 311, 622, 2177, 4354, 5287, 10574, 37009, 74018.
What is 74018 in binary?
10010000100100010 (hexadecimal 12122, octal 220442).
What is the square root of 74018?
About 272.0625.
Is 74018 divisible by 3?
No. Its digits add up to 20, which is not a multiple of 3.
What is special about the number 74018?
74018 is a happy number: repeatedly adding the squares of its digits reaches 1.