The number 49878
49878 is a composite number with 24 divisors. Its prime factorisation is 2 × × 17 × 163. Divisors (24): 1, 2, 3, 6, 9, 17, 18, 34, 51, 102, 153, 163, 306, 326, 489, 978 … 49878.
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How to work it out
- 1
49878 has no famous special property in the usual lists (prime, square, cube, triangular, Fibonacci, palindrome, perfect), but it is still a composite number.
- 2
49878 is composite. Its prime factorisation is
- 3
The divisors add up to 115128; without 49878 itself that is 65250, so 49878 is abundant (65250 is more than 49878). Euler's totient φ(49878) = 15552 numbers up to 49878 share no factor with it.
- 4
The digits of 49878 add up to 36, and repeating that until one digit is left gives the digital root 9. The Collatz sequence (halve if even, else 3n+1) takes 114 steps to reach 1.
LaTeX source of the formulas on this page
\[ 49878 = 2 \times 3^{2} \times 17 \times 163 \]49878 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 24 |
| Sum of divisors | 115128 |
| Euler totient φ(n) | 15552 |
| Square | 2487814884 |
| Cube | 124087230784152 |
| Square root | 223.333831 (= 3√5542) |
| Digit sum / digital root | 36 / 9 |
| Collatz steps to 1 | 114 |
| Scientific notation | 4.9878 × |
49878 in other forms
| Form | Value |
|---|---|
| In words | forty-nine thousand eight hundred and seventy-eight |
| Binary (base 2) | 1100001011010110 |
| Octal (base 8) | 141326 |
| Hexadecimal (base 16) | C2D6 |
| Base 3 | 2112102100 |
| As time | 49878 seconds = 13 h 51 min 18 s |
Is 49878 divisible by 2 to 12?
| Divisor | Answer | Rule |
|---|---|---|
| 2 | Yes (49878 ÷ 2 = 24939) | A number is divisible by 2 if the last digit is even (0, 2, 4, 6, 8). |
| 3 | Yes (49878 ÷ 3 = 16626) | 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 | Yes (49878 ÷ 6 = 8313) | 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 6) | A number is divisible by 8 if the last three digits make a multiple of 8. |
| 9 | Yes (49878 ÷ 9 = 5542) | 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 4) | A number is divisible by 11 if the alternating sum of the digits is a multiple of 11. |
| 12 | No (remainder 6) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 49878 a prime number?
No. 49878 = 2 × × 17 × 163, so it is divisible by 2.
What are the factors of 49878?
1, 2, 3, 6, 9, 17, 18, 34, 51, 102, 153, 163, 306, 326, 489, 978, 1467, 2771, 2934, 5542, 8313, 16626, 24939, 49878.
What is 49878 in binary?
1100001011010110 (hexadecimal C2D6, octal 141326).
What is the square root of 49878?
About 223.3338, exactly 3√5542.
Is 49878 divisible by 3?
Yes. Its digits add up to 36, a multiple of 3.
What is special about the number 49878?
It is a composite number with 24 divisors.