The number 48689
48689 is a composite number with 4 divisors. Its prime factorisation is 181 × 269. Divisors (4): 1, 181, 269, 48689.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 48689: a semiprime: 181 × 269, the product of two primes.
- 2
48689 is composite. Its prime factorisation is
- 3
The divisors add up to 49140; without 48689 itself that is 451, so 48689 is deficient (451 is less than 48689). Euler's totient φ(48689) = 48240 numbers up to 48689 share no factor with it.
- 4
The digits of 48689 add up to 35, and repeating that until one digit is left gives the digital root 8. The Collatz sequence (halve if even, else 3n+1) takes 70 steps to reach 1.
LaTeX source of the formulas on this page
\[ 48689 = 181 \times 269 \]
48689 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 4 |
| Sum of divisors | 49140 |
| Euler totient φ(n) | 48240 |
| Square | 2370618721 |
| Cube | 115423054906769 |
| Square root | 220.655841 |
| Digit sum / digital root | 35 / 8 |
| Collatz steps to 1 | 70 |
| Scientific notation | 4.8689 × |
48689 in other forms
| Form | Value |
|---|---|
| In words | forty-eight thousand six hundred and eighty-nine |
| Binary (base 2) | 1011111000110001 |
| Octal (base 8) | 137061 |
| Hexadecimal (base 16) | BE31 |
| Base 3 | 2110210022 |
| As time | 48689 seconds = 13 h 31 min 29 s |
Is 48689 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 1) | A number is divisible by 4 if the last two digits make a multiple of 4. |
| 5 | No (remainder 4) | 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 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 1) | A number is divisible by 8 if the last three digits make a multiple of 8. |
| 9 | No (remainder 8) | A number is divisible by 9 if the digits add up to a multiple of 9. |
| 10 | No (remainder 9) | A number is divisible by 10 if the last digit is 0. |
| 11 | No (remainder 3) | A number is divisible by 11 if the alternating sum of the digits is a multiple of 11. |
| 12 | No (remainder 5) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 48689 a prime number?
No. 48689 = 181 × 269, so it is divisible by 181.
What are the factors of 48689?
1, 181, 269, 48689.
What is 48689 in binary?
1011111000110001 (hexadecimal BE31, octal 137061).
What is the square root of 48689?
About 220.6558.
Is 48689 divisible by 3?
No. Its digits add up to 35, which is not a multiple of 3.
What is special about the number 48689?
48689 is a semiprime: 181 × 269, the product of two primes.