The number 98018
98018 is a composite number with 4 divisors. Its prime factorisation is 2 × 49009. Divisors (4): 1, 2, 49009, 98018.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 98018: a semiprime: 2 × 49009, the product of two primes.
- 2
98018 is composite. Its prime factorisation is
- 3
The divisors add up to 147030; without 98018 itself that is 49012, so 98018 is deficient (49012 is less than 98018). Euler's totient φ(98018) = 49008 numbers up to 98018 share no factor with it.
- 4
The digits of 98018 add up to 26, and repeating that until one digit is left gives the digital root 8. The Collatz sequence (halve if even, else 3n+1) takes 66 steps to reach 1.
LaTeX source of the formulas on this page
\[ 98018 = 2 \times 49009 \]
98018 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 4 |
| Sum of divisors | 147030 |
| Euler totient φ(n) | 49008 |
| Square | 9607528324 |
| Cube | 941710711261832 |
| Square root | 313.078265 |
| Digit sum / digital root | 26 / 8 |
| Collatz steps to 1 | 66 |
| Scientific notation | 9.8018 × |
98018 in other forms
| Form | Value |
|---|---|
| In words | ninety-eight thousand and eighteen |
| Binary (base 2) | 10111111011100010 |
| Octal (base 8) | 277342 |
| Hexadecimal (base 16) | 17EE2 |
| Base 3 | 11222110022 |
| As time | 98018 seconds = 27 h 13 min 38 s |
Is 98018 divisible by 2 to 12?
| Divisor | Answer | Rule |
|---|---|---|
| 2 | Yes (98018 ÷ 2 = 49009) | 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 | No (remainder 4) | 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 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 2) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 98018 a prime number?
No. 98018 = 2 × 49009, so it is divisible by 2.
What are the factors of 98018?
1, 2, 49009, 98018.
What is 98018 in binary?
10111111011100010 (hexadecimal 17EE2, octal 277342).
What is the square root of 98018?
About 313.0783.
Is 98018 divisible by 3?
No. Its digits add up to 26, which is not a multiple of 3.
What is special about the number 98018?
98018 is a semiprime: 2 × 49009, the product of two primes.