The number 98421
98421 is a composite number with 8 divisors. Its prime factorisation is 3 × 53 × 619. Divisors (8): 1, 3, 53, 159, 619, 1857, 32807, 98421.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
98421 has no famous special property in the usual lists (prime, square, cube, triangular, Fibonacci, palindrome, perfect), but it is still a composite number.
- 2
98421 is composite. Its prime factorisation is
- 3
The divisors add up to 133920; without 98421 itself that is 35499, so 98421 is deficient (35499 is less than 98421). Euler's totient φ(98421) = 64272 numbers up to 98421 share no factor with it.
- 4
The digits of 98421 add up to 24, and repeating that until one digit is left gives the digital root 6. The Collatz sequence (halve if even, else 3n+1) takes 115 steps to reach 1.
LaTeX source of the formulas on this page
\[ 98421 = 3 \times 53 \times 619 \]
98421 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 8 |
| Sum of divisors | 133920 |
| Euler totient φ(n) | 64272 |
| Square | 9686693241 |
| Cube | 953374035472461 |
| Square root | 313.721214 |
| Digit sum / digital root | 24 / 6 |
| Collatz steps to 1 | 115 |
| Scientific notation | 9.8421 × |
98421 in other forms
| Form | Value |
|---|---|
| In words | ninety-eight thousand four hundred and twenty-one |
| Binary (base 2) | 11000000001110101 |
| Octal (base 8) | 300165 |
| Hexadecimal (base 16) | 18075 |
| Base 3 | 12000000020 |
| As time | 98421 seconds = 27 h 20 min 21 s |
Is 98421 divisible by 2 to 12?
| Divisor | Answer | Rule |
|---|---|---|
| 2 | No (remainder 1) | A number is divisible by 2 if the last digit is even (0, 2, 4, 6, 8). |
| 3 | Yes (98421 ÷ 3 = 32807) | A number is divisible by 3 if the digits add up to a multiple of 3. |
| 4 | No (remainder 1) | 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 3) | 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 5) | A number is divisible by 8 if the last three digits make a multiple of 8. |
| 9 | No (remainder 6) | A number is divisible by 9 if the digits add up to a multiple of 9. |
| 10 | No (remainder 1) | A number is divisible by 10 if the last digit is 0. |
| 11 | No (remainder 4) | A number is divisible by 11 if the alternating sum of the digits is a multiple of 11. |
| 12 | No (remainder 9) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 98421 a prime number?
No. 98421 = 3 × 53 × 619, so it is divisible by 3.
What are the factors of 98421?
1, 3, 53, 159, 619, 1857, 32807, 98421.
What is 98421 in binary?
11000000001110101 (hexadecimal 18075, octal 300165).
What is the square root of 98421?
About 313.7212.
Is 98421 divisible by 3?
Yes. Its digits add up to 24, a multiple of 3.
What is special about the number 98421?
It is a composite number with 8 divisors.