The number 87467
87467 is a composite number with 4 divisors. Its prime factorisation is 47 × 1861. Divisors (4): 1, 47, 1861, 87467.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 87467: a semiprime: 47 × 1861, the product of two primes.
- 2
87467 is composite. Its prime factorisation is
- 3
The divisors add up to 89376; without 87467 itself that is 1909, so 87467 is deficient (1909 is less than 87467). Euler's totient φ(87467) = 85560 numbers up to 87467 share no factor with it.
- 4
The digits of 87467 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 151 steps to reach 1.
LaTeX source of the formulas on this page
\[ 87467 = 47 \times 1861 \]
87467 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 4 |
| Sum of divisors | 89376 |
| Euler totient φ(n) | 85560 |
| Square | 7650476089 |
| Cube | 669164192076563 |
| Square root | 295.748204 |
| Digit sum / digital root | 32 / 5 |
| Collatz steps to 1 | 151 |
| Scientific notation | 8.7467 × |
87467 in other forms
| Form | Value |
|---|---|
| In words | eighty-seven thousand four hundred and sixty-seven |
| Binary (base 2) | 10101010110101011 |
| Octal (base 8) | 252653 |
| Hexadecimal (base 16) | 155AB |
| Base 3 | 11102222112 |
| As time | 87467 seconds = 24 h 17 min 47 s |
Is 87467 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 2) | 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 87467 a prime number?
No. 87467 = 47 × 1861, so it is divisible by 47.
What are the factors of 87467?
1, 47, 1861, 87467.
What is 87467 in binary?
10101010110101011 (hexadecimal 155AB, octal 252653).
What is the square root of 87467?
About 295.7482.
Is 87467 divisible by 3?
No. Its digits add up to 32, which is not a multiple of 3.
What is special about the number 87467?
87467 is a semiprime: 47 × 1861, the product of two primes.