The number 49428
49428 is a composite number with 18 divisors. Its prime factorisation is × × 1373. Divisors (18): 1, 2, 3, 4, 6, 9, 12, 18, 36, 1373, 2746, 4119, 5492, 8238, 12357, 16476 … 49428.
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How to work it out
- 1
49428 has no famous special property in the usual lists (prime, square, cube, triangular, Fibonacci, palindrome, perfect), but it is still a composite number.
- 2
49428 is composite. Its prime factorisation is
- 3
The divisors add up to 125034; without 49428 itself that is 75606, so 49428 is abundant (75606 is more than 49428). Euler's totient φ(49428) = 16464 numbers up to 49428 share no factor with it.
- 4
The digits of 49428 add up to 27, and repeating that until one digit is left gives the digital root 9. The Collatz sequence (halve if even, else 3n+1) takes 39 steps to reach 1.
LaTeX source of the formulas on this page
\[ 49428 = 2^{2} \times 3^{2} \times 1373 \]49428 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 18 |
| Sum of divisors | 125034 |
| Euler totient φ(n) | 16464 |
| Square | 2443127184 |
| Cube | 120758890450752 |
| Square root | 222.324088 (= 6√1373) |
| Digit sum / digital root | 27 / 9 |
| Collatz steps to 1 | 39 |
| Scientific notation | 4.9428 × |
49428 in other forms
| Form | Value |
|---|---|
| In words | forty-nine thousand four hundred and twenty-eight |
| Binary (base 2) | 1100000100010100 |
| Octal (base 8) | 140424 |
| Hexadecimal (base 16) | C114 |
| Base 3 | 2111210200 |
| As time | 49428 seconds = 13 h 43 min 48 s |
Is 49428 divisible by 2 to 12?
| Divisor | Answer | Rule |
|---|---|---|
| 2 | Yes (49428 ÷ 2 = 24714) | A number is divisible by 2 if the last digit is even (0, 2, 4, 6, 8). |
| 3 | Yes (49428 ÷ 3 = 16476) | A number is divisible by 3 if the digits add up to a multiple of 3. |
| 4 | Yes (49428 ÷ 4 = 12357) | 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 | Yes (49428 ÷ 6 = 8238) | 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 4) | A number is divisible by 8 if the last three digits make a multiple of 8. |
| 9 | Yes (49428 ÷ 9 = 5492) | 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 5) | A number is divisible by 11 if the alternating sum of the digits is a multiple of 11. |
| 12 | Yes (49428 ÷ 12 = 4119) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 49428 a prime number?
No. 49428 = × × 1373, so it is divisible by 2.
What are the factors of 49428?
1, 2, 3, 4, 6, 9, 12, 18, 36, 1373, 2746, 4119, 5492, 8238, 12357, 16476, 24714, 49428.
What is 49428 in binary?
1100000100010100 (hexadecimal C114, octal 140424).
What is the square root of 49428?
About 222.3241, exactly 6√1373.
Is 49428 divisible by 3?
Yes. Its digits add up to 27, a multiple of 3.
What is special about the number 49428?
It is a composite number with 18 divisors.