The number 48745
48745 is a composite number with 4 divisors. Its prime factorisation is 5 × 9749. Divisors (4): 1, 5, 9749, 48745.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 48745: a semiprime: 5 × 9749, the product of two primes.
- 2
48745 is composite. Its prime factorisation is
- 3
The divisors add up to 58500; without 48745 itself that is 9755, so 48745 is deficient (9755 is less than 48745). Euler's totient φ(48745) = 38992 numbers up to 48745 share no factor with it.
- 4
The digits of 48745 add up to 28, and repeating that until one digit is left gives the digital root 1. The Collatz sequence (halve if even, else 3n+1) takes 176 steps to reach 1.
LaTeX source of the formulas on this page
\[ 48745 = 5 \times 9749 \]
48745 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 4 |
| Sum of divisors | 58500 |
| Euler totient φ(n) | 38992 |
| Square | 2376075025 |
| Cube | 115821777093625 |
| Square root | 220.782699 |
| Digit sum / digital root | 28 / 1 |
| Collatz steps to 1 | 176 |
| Scientific notation | 4.8745 × |
48745 in other forms
| Form | Value |
|---|---|
| In words | forty-eight thousand seven hundred and forty-five |
| Binary (base 2) | 1011111001101001 |
| Octal (base 8) | 137151 |
| Hexadecimal (base 16) | BE69 |
| Base 3 | 2110212101 |
| As time | 48745 seconds = 13 h 32 min 25 s |
Is 48745 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 1) | A number is divisible by 4 if the last two digits make a multiple of 4. |
| 5 | Yes (48745 ÷ 5 = 9749) | 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 1) | A number is divisible by 8 if the last three digits make a multiple of 8. |
| 9 | No (remainder 1) | A number is divisible by 9 if the digits add up to a multiple of 9. |
| 10 | No (remainder 5) | A number is divisible by 10 if the last digit is 0. |
| 11 | No (remainder 4) | A number is divisible by 11 if the alternating sum of the digits is a multiple of 11. |
| 12 | No (remainder 1) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 48745 a prime number?
No. 48745 = 5 × 9749, so it is divisible by 5.
What are the factors of 48745?
1, 5, 9749, 48745.
What is 48745 in binary?
1011111001101001 (hexadecimal BE69, octal 137151).
What is the square root of 48745?
About 220.7827.
Is 48745 divisible by 3?
No. Its digits add up to 28, which is not a multiple of 3.
What is special about the number 48745?
48745 is a semiprime: 5 × 9749, the product of two primes.