The number 9428
9428 is a composite number with 6 divisors. Its prime factorisation is × 2357. Divisors (6): 1, 2, 4, 2357, 4714, 9428.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
9428 has no famous special property in the usual lists (prime, square, cube, triangular, Fibonacci, palindrome, perfect), but it is still a composite number.
- 2
9428 is composite. Its prime factorisation is
- 3
The divisors add up to 16506; without 9428 itself that is 7078, so 9428 is deficient (7078 is less than 9428). Euler's totient φ(9428) = 4712 numbers up to 9428 share no factor with it.
- 4
The digits of 9428 add up to 23, and repeating that until one digit is left gives the digital root 5. The Collatz sequence (halve if even, else 3n+1) takes 122 steps to reach 1.
LaTeX source of the formulas on this page
\[ 9428 = 2^{2} \times 2357 \]9428 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 6 |
| Sum of divisors | 16506 |
| Euler totient φ(n) | 4712 |
| Square | 88887184 |
| Cube | 838028370752 |
| Square root | 97.097889 (= 2√2357) |
| Digit sum / digital root | 23 / 5 |
| Collatz steps to 1 | 122 |
| Scientific notation | 9.428 × |
9428 in other forms
| Form | Value |
|---|---|
| In words | nine thousand four hundred and twenty-eight |
| Binary (base 2) | 10010011010100 |
| Octal (base 8) | 22324 |
| Hexadecimal (base 16) | 24D4 |
| Base 3 | 110221012 |
| As time | 9428 seconds = 2 h 37 min 8 s |
Is 9428 divisible by 2 to 12?
| Divisor | Answer | Rule |
|---|---|---|
| 2 | Yes (9428 ÷ 2 = 4714) | 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 | Yes (9428 ÷ 4 = 2357) | 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 6) | 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 4) | A number is divisible by 8 if the last three digits make a multiple of 8. |
| 9 | No (remainder 5) | 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 1) | A number is divisible by 11 if the alternating sum of the digits is a multiple of 11. |
| 12 | No (remainder 8) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 9428 a prime number?
No. 9428 = × 2357, so it is divisible by 2.
What are the factors of 9428?
1, 2, 4, 2357, 4714, 9428.
What is 9428 in binary?
10010011010100 (hexadecimal 24D4, octal 22324).
What is the square root of 9428?
About 97.0979, exactly 2√2357.
Is 9428 divisible by 3?
No. Its digits add up to 23, which is not a multiple of 3.
What is special about the number 9428?
It is a composite number with 6 divisors.