The number 46987
46987 is a composite number with 4 divisors. Its prime factorisation is 19 × 2473. Divisors (4): 1, 19, 2473, 46987.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 46987: a semiprime: 19 × 2473, the product of two primes.
- 2
46987 is composite. Its prime factorisation is
- 3
The divisors add up to 49480; without 46987 itself that is 2493, so 46987 is deficient (2493 is less than 46987). Euler's totient φ(46987) = 44496 numbers up to 46987 share no factor with it.
- 4
The digits of 46987 add up to 34, and repeating that until one digit is left gives the digital root 7. The Collatz sequence (halve if even, else 3n+1) takes 176 steps to reach 1.
LaTeX source of the formulas on this page
\[ 46987 = 19 \times 2473 \]
46987 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 4 |
| Sum of divisors | 49480 |
| Euler totient φ(n) | 44496 |
| Square | 2207778169 |
| Cube | 103736872826803 |
| Square root | 216.764850 |
| Digit sum / digital root | 34 / 7 |
| Collatz steps to 1 | 176 |
| Scientific notation | 4.6987 × |
46987 in other forms
| Form | Value |
|---|---|
| In words | forty-six thousand nine hundred and eighty-seven |
| Binary (base 2) | 1011011110001011 |
| Octal (base 8) | 133613 |
| Hexadecimal (base 16) | B78B |
| Base 3 | 2101110021 |
| As time | 46987 seconds = 13 h 3 min 7 s |
Is 46987 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 2) | 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 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 3) | 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 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 7) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 46987 a prime number?
No. 46987 = 19 × 2473, so it is divisible by 19.
What are the factors of 46987?
1, 19, 2473, 46987.
What is 46987 in binary?
1011011110001011 (hexadecimal B78B, octal 133613).
What is the square root of 46987?
About 216.7648.
Is 46987 divisible by 3?
No. Its digits add up to 34, which is not a multiple of 3.
What is special about the number 46987?
46987 is a semiprime: 19 × 2473, the product of two primes.