The number 49687
49687 is a composite number with 4 divisors. Its prime factorisation is 11 × 4517. Divisors (4): 1, 11, 4517, 49687.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 49687: a semiprime: 11 × 4517, the product of two primes.
- 2
49687 is composite. Its prime factorisation is
- 3
The divisors add up to 54216; without 49687 itself that is 4529, so 49687 is deficient (4529 is less than 49687). Euler's totient φ(49687) = 45160 numbers up to 49687 share no factor with it.
- 4
The digits of 49687 add up to 34, and repeating that until one digit is left gives the digital root 7. The Collatz sequence (halve if even, else 3n+1) takes 158 steps to reach 1.
LaTeX source of the formulas on this page
\[ 49687 = 11 \times 4517 \]
49687 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 4 |
| Sum of divisors | 54216 |
| Euler totient φ(n) | 45160 |
| Square | 2468797969 |
| Cube | 122667164685703 |
| Square root | 222.905810 |
| Digit sum / digital root | 34 / 7 |
| Collatz steps to 1 | 158 |
| Scientific notation | 4.9687 × |
49687 in other forms
| Form | Value |
|---|---|
| In words | forty-nine thousand six hundred and eighty-seven |
| Binary (base 2) | 1100001000010111 |
| Octal (base 8) | 141027 |
| Hexadecimal (base 16) | C217 |
| Base 3 | 2112011021 |
| As time | 49687 seconds = 13 h 48 min 7 s |
Is 49687 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 | No (remainder 1) | A number is divisible by 3 if the digits add up to a multiple of 3. |
| 4 | No (remainder 3) | A number is divisible by 4 if the last two digits make a multiple of 4. |
| 5 | No (remainder 2) | A number is divisible by 5 if the last digit is 0 or 5. |
| 6 | No (remainder 1) | 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 7) | 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 7) | A number is divisible by 10 if the last digit is 0. |
| 11 | Yes (49687 ÷ 11 = 4517) | A number is divisible by 11 if the alternating sum of the digits is a multiple of 11. |
| 12 | No (remainder 7) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 49687 a prime number?
No. 49687 = 11 × 4517, so it is divisible by 11.
What are the factors of 49687?
1, 11, 4517, 49687.
What is 49687 in binary?
1100001000010111 (hexadecimal C217, octal 141027).
What is the square root of 49687?
About 222.9058.
Is 49687 divisible by 3?
No. Its digits add up to 34, which is not a multiple of 3.
What is special about the number 49687?
49687 is a semiprime: 11 × 4517, the product of two primes.