The number 47023
47023 is a composite number with 4 divisors. Its prime factorisation is 59 × 797. Divisors (4): 1, 59, 797, 47023.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 47023: a semiprime: 59 × 797, the product of two primes.
- 2
47023 is composite. Its prime factorisation is
- 3
The divisors add up to 47880; without 47023 itself that is 857, so 47023 is deficient (857 is less than 47023). Euler's totient φ(47023) = 46168 numbers up to 47023 share no factor with it.
- 4
The digits of 47023 add up to 16, and repeating that until one digit is left gives the digital root 7. The Collatz sequence (halve if even, else 3n+1) takes 57 steps to reach 1.
LaTeX source of the formulas on this page
\[ 47023 = 59 \times 797 \]
47023 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 4 |
| Sum of divisors | 47880 |
| Euler totient φ(n) | 46168 |
| Square | 2211162529 |
| Cube | 103975495601167 |
| Square root | 216.847873 |
| Digit sum / digital root | 16 / 7 |
| Collatz steps to 1 | 57 |
| Scientific notation | 4.7023 × |
47023 in other forms
| Form | Value |
|---|---|
| In words | forty-seven thousand and twenty-three |
| Binary (base 2) | 1011011110101111 |
| Octal (base 8) | 133657 |
| Hexadecimal (base 16) | B7AF |
| Base 3 | 2101111121 |
| As time | 47023 seconds = 13 h 3 min 43 s |
Is 47023 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 3) | 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 4) | 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 3) | A number is divisible by 10 if the last digit is 0. |
| 11 | No (remainder 9) | 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 47023 a prime number?
No. 47023 = 59 × 797, so it is divisible by 59.
What are the factors of 47023?
1, 59, 797, 47023.
What is 47023 in binary?
1011011110101111 (hexadecimal B7AF, octal 133657).
What is the square root of 47023?
About 216.8479.
Is 47023 divisible by 3?
No. Its digits add up to 16, which is not a multiple of 3.
What is special about the number 47023?
47023 is a semiprime: 59 × 797, the product of two primes.