The number 47746
47746 is a composite number with 4 divisors. Its prime factorisation is 2 × 23873. Divisors (4): 1, 2, 23873, 47746.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 47746: a semiprime: 2 × 23873, the product of two primes.
- 2
47746 is composite. Its prime factorisation is
- 3
The divisors add up to 71622; without 47746 itself that is 23876, so 47746 is deficient (23876 is less than 47746). Euler's totient φ(47746) = 23872 numbers up to 47746 share no factor with it.
- 4
The digits of 47746 add up to 28, and repeating that until one digit is left gives the digital root 1. The Collatz sequence (halve if even, else 3n+1) takes 96 steps to reach 1.
LaTeX source of the formulas on this page
\[ 47746 = 2 \times 23873 \]
47746 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 4 |
| Sum of divisors | 71622 |
| Euler totient φ(n) | 23872 |
| Square | 2279680516 |
| Cube | 108845625916936 |
| Square root | 218.508581 |
| Digit sum / digital root | 28 / 1 |
| Collatz steps to 1 | 96 |
| Scientific notation | 4.7746 × |
47746 in other forms
| Form | Value |
|---|---|
| In words | forty-seven thousand seven hundred and forty-six |
| Binary (base 2) | 1011101010000010 |
| Octal (base 8) | 135202 |
| Hexadecimal (base 16) | BA82 |
| Base 3 | 2102111101 |
| As time | 47746 seconds = 13 h 15 min 46 s |
Is 47746 divisible by 2 to 12?
| Divisor | Answer | Rule |
|---|---|---|
| 2 | Yes (47746 ÷ 2 = 23873) | 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 2) | 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 4) | 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 2) | A number is divisible by 8 if the last three digits make a multiple of 8. |
| 9 | No (remainder 1) | A number is divisible by 9 if the digits add up to a multiple of 9. |
| 10 | No (remainder 6) | A number is divisible by 10 if the last digit is 0. |
| 11 | No (remainder 6) | A number is divisible by 11 if the alternating sum of the digits is a multiple of 11. |
| 12 | No (remainder 10) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 47746 a prime number?
No. 47746 = 2 × 23873, so it is divisible by 2.
What are the factors of 47746?
1, 2, 23873, 47746.
What is 47746 in binary?
1011101010000010 (hexadecimal BA82, octal 135202).
What is the square root of 47746?
About 218.5086.
Is 47746 divisible by 3?
No. Its digits add up to 28, which is not a multiple of 3.
What is special about the number 47746?
47746 is a semiprime: 2 × 23873, the product of two primes.