The number 40498
40498 is a composite number with 4 divisors. Its prime factorisation is 2 × 20249. Divisors (4): 1, 2, 20249, 40498.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 40498: a semiprime: 2 × 20249, the product of two primes.
- 2
40498 is composite. Its prime factorisation is
- 3
The divisors add up to 60750; without 40498 itself that is 20252, so 40498 is deficient (20252 is less than 40498). Euler's totient φ(40498) = 20248 numbers up to 40498 share no factor with it.
- 4
The digits of 40498 add up to 25, and repeating that until one digit is left gives the digital root 7. The Collatz sequence (halve if even, else 3n+1) takes 181 steps to reach 1.
LaTeX source of the formulas on this page
\[ 40498 = 2 \times 20249 \]
40498 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 4 |
| Sum of divisors | 60750 |
| Euler totient φ(n) | 20248 |
| Square | 1640088004 |
| Cube | 66420283985992 |
| Square root | 201.241149 |
| Digit sum / digital root | 25 / 7 |
| Collatz steps to 1 | 181 |
| Scientific notation | 4.0498 × |
40498 in other forms
| Form | Value |
|---|---|
| In words | forty thousand four hundred and ninety-eight |
| Binary (base 2) | 1001111000110010 |
| Octal (base 8) | 117062 |
| Hexadecimal (base 16) | 9E32 |
| Base 3 | 2001112221 |
| As time | 40498 seconds = 11 h 14 min 58 s |
Is 40498 divisible by 2 to 12?
| Divisor | Answer | Rule |
|---|---|---|
| 2 | Yes (40498 ÷ 2 = 20249) | A number is divisible by 2 if the last digit is even (0, 2, 4, 6, 8). |
| 3 | No (remainder 1) | 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 4) | A number is divisible by 6 if it is divisible by both 2 and 3. |
| 7 | No (remainder 3) | 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 7) | 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 10) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 40498 a prime number?
No. 40498 = 2 × 20249, so it is divisible by 2.
What are the factors of 40498?
1, 2, 20249, 40498.
What is 40498 in binary?
1001111000110010 (hexadecimal 9E32, octal 117062).
What is the square root of 40498?
About 201.2411.
Is 40498 divisible by 3?
No. Its digits add up to 25, which is not a multiple of 3.
What is special about the number 40498?
40498 is a semiprime: 2 × 20249, the product of two primes.