The number 47662
47662 is a composite number with 4 divisors. Its prime factorisation is 2 × 23831. Divisors (4): 1, 2, 23831, 47662.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 47662: a semiprime: 2 × 23831, the product of two primes.
- 2
47662 is composite. Its prime factorisation is
- 3
The divisors add up to 71496; without 47662 itself that is 23834, so 47662 is deficient (23834 is less than 47662). Euler's totient φ(47662) = 23830 numbers up to 47662 share no factor with it.
- 4
The digits of 47662 add up to 25, and repeating that until one digit is left gives the digital root 7. The Collatz sequence (halve if even, else 3n+1) takes 145 steps to reach 1.
LaTeX source of the formulas on this page
\[ 47662 = 2 \times 23831 \]
47662 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 4 |
| Sum of divisors | 71496 |
| Euler totient φ(n) | 23830 |
| Square | 2271666244 |
| Cube | 108272156521528 |
| Square root | 218.316284 |
| Digit sum / digital root | 25 / 7 |
| Collatz steps to 1 | 145 |
| Scientific notation | 4.7662 × |
47662 in other forms
| Form | Value |
|---|---|
| In words | forty-seven thousand six hundred and sixty-two |
| Binary (base 2) | 1011101000101110 |
| Octal (base 8) | 135056 |
| Hexadecimal (base 16) | BA2E |
| Base 3 | 2102101021 |
| As time | 47662 seconds = 13 h 14 min 22 s |
Is 47662 divisible by 2 to 12?
| Divisor | Answer | Rule |
|---|---|---|
| 2 | Yes (47662 ÷ 2 = 23831) | 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 2) | 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 6) | 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 2) | A number is divisible by 10 if the last digit is 0. |
| 11 | No (remainder 10) | 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 47662 a prime number?
No. 47662 = 2 × 23831, so it is divisible by 2.
What are the factors of 47662?
1, 2, 23831, 47662.
What is 47662 in binary?
1011101000101110 (hexadecimal BA2E, octal 135056).
What is the square root of 47662?
About 218.3163.
Is 47662 divisible by 3?
No. Its digits add up to 25, which is not a multiple of 3.
What is special about the number 47662?
47662 is a semiprime: 2 × 23831, the product of two primes.