The number 47162
47162 is a composite number with 4 divisors. Its prime factorisation is 2 × 23581. Divisors (4): 1, 2, 23581, 47162.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 47162: a semiprime: 2 × 23581, the product of two primes.
- 2
47162 is composite. Its prime factorisation is
- 3
The divisors add up to 70746; without 47162 itself that is 23584, so 47162 is deficient (23584 is less than 47162). Euler's totient φ(47162) = 23580 numbers up to 47162 share no factor with it.
- 4
The digits of 47162 add up to 20, and repeating that until one digit is left gives the digital root 2. The Collatz sequence (halve if even, else 3n+1) takes 83 steps to reach 1.
LaTeX source of the formulas on this page
\[ 47162 = 2 \times 23581 \]
47162 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 4 |
| Sum of divisors | 70746 |
| Euler totient φ(n) | 23580 |
| Square | 2224254244 |
| Cube | 104900278655528 |
| Square root | 217.168138 |
| Digit sum / digital root | 20 / 2 |
| Collatz steps to 1 | 83 |
| Scientific notation | 4.7162 × |
47162 in other forms
| Form | Value |
|---|---|
| In words | forty-seven thousand one hundred and sixty-two |
| Binary (base 2) | 1011100000111010 |
| Octal (base 8) | 134072 |
| Hexadecimal (base 16) | B83A |
| Base 3 | 2101200202 |
| As time | 47162 seconds = 13 h 6 min 2 s |
Is 47162 divisible by 2 to 12?
| Divisor | Answer | Rule |
|---|---|---|
| 2 | Yes (47162 ÷ 2 = 23581) | A number is divisible by 2 if the last digit is even (0, 2, 4, 6, 8). |
| 3 | No (remainder 2) | 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 2) | 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 2) | A number is divisible by 8 if the last three digits make a multiple of 8. |
| 9 | No (remainder 2) | 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 5) | A number is divisible by 11 if the alternating sum of the digits is a multiple of 11. |
| 12 | No (remainder 2) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 47162 a prime number?
No. 47162 = 2 × 23581, so it is divisible by 2.
What are the factors of 47162?
1, 2, 23581, 47162.
What is 47162 in binary?
1011100000111010 (hexadecimal B83A, octal 134072).
What is the square root of 47162?
About 217.1681.
Is 47162 divisible by 3?
No. Its digits add up to 20, which is not a multiple of 3.
What is special about the number 47162?
47162 is a semiprime: 2 × 23581, the product of two primes.