The number 47867
47867 is a composite number with 4 divisors. Its prime factorisation is 151 × 317. Divisors (4): 1, 151, 317, 47867.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 47867: a semiprime: 151 × 317, the product of two primes.
- 2
47867 is composite. Its prime factorisation is
- 3
The divisors add up to 48336; without 47867 itself that is 469, so 47867 is deficient (469 is less than 47867). Euler's totient φ(47867) = 47400 numbers up to 47867 share no factor with it.
- 4
The digits of 47867 add up to 32, and repeating that until one digit is left gives the digital root 5. The Collatz sequence (halve if even, else 3n+1) takes 158 steps to reach 1.
LaTeX source of the formulas on this page
\[ 47867 = 151 \times 317 \]
47867 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 4 |
| Sum of divisors | 48336 |
| Euler totient φ(n) | 47400 |
| Square | 2291249689 |
| Cube | 109675248863363 |
| Square root | 218.785283 |
| Digit sum / digital root | 32 / 5 |
| Collatz steps to 1 | 158 |
| Scientific notation | 4.7867 × |
47867 in other forms
| Form | Value |
|---|---|
| In words | forty-seven thousand eight hundred and sixty-seven |
| Binary (base 2) | 1011101011111011 |
| Octal (base 8) | 135373 |
| Hexadecimal (base 16) | BAFB |
| Base 3 | 2102122212 |
| As time | 47867 seconds = 13 h 17 min 47 s |
Is 47867 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 2) | 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 5) | 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 3) | A number is divisible by 8 if the last three digits make a multiple of 8. |
| 9 | No (remainder 5) | 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 | No (remainder 6) | A number is divisible by 11 if the alternating sum of the digits is a multiple of 11. |
| 12 | No (remainder 11) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 47867 a prime number?
No. 47867 = 151 × 317, so it is divisible by 151.
What are the factors of 47867?
1, 151, 317, 47867.
What is 47867 in binary?
1011101011111011 (hexadecimal BAFB, octal 135373).
What is the square root of 47867?
About 218.7853.
Is 47867 divisible by 3?
No. Its digits add up to 32, which is not a multiple of 3.
What is special about the number 47867?
47867 is a semiprime: 151 × 317, the product of two primes.