The number 48815
48815 is a composite number with 8 divisors. Its prime factorisation is 5 × 13 × 751. Divisors (8): 1, 5, 13, 65, 751, 3755, 9763, 48815.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
48815 has no famous special property in the usual lists (prime, square, cube, triangular, Fibonacci, palindrome, perfect), but it is still a composite number.
- 2
48815 is composite. Its prime factorisation is
- 3
The divisors add up to 63168; without 48815 itself that is 14353, so 48815 is deficient (14353 is less than 48815). Euler's totient φ(48815) = 36000 numbers up to 48815 share no factor with it.
- 4
The digits of 48815 add up to 26, 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
\[ 48815 = 5 \times 13 \times 751 \]
48815 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 8 |
| Sum of divisors | 63168 |
| Euler totient φ(n) | 36000 |
| Square | 2382904225 |
| Cube | 116321469743375 |
| Square root | 220.941169 |
| Digit sum / digital root | 26 / 8 |
| Collatz steps to 1 | 70 |
| Scientific notation | 4.8815 × |
48815 in other forms
| Form | Value |
|---|---|
| In words | forty-eight thousand eight hundred and fifteen |
| Binary (base 2) | 1011111010101111 |
| Octal (base 8) | 137257 |
| Hexadecimal (base 16) | BEAF |
| Base 3 | 2110221222 |
| As time | 48815 seconds = 13 h 33 min 35 s |
Is 48815 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 | Yes (48815 ÷ 5 = 9763) | 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 7) | 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 5) | A number is divisible by 10 if the last digit is 0. |
| 11 | No (remainder 8) | 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 48815 a prime number?
No. 48815 = 5 × 13 × 751, so it is divisible by 5.
What are the factors of 48815?
1, 5, 13, 65, 751, 3755, 9763, 48815.
What is 48815 in binary?
1011111010101111 (hexadecimal BEAF, octal 137257).
What is the square root of 48815?
About 220.9412.
Is 48815 divisible by 3?
No. Its digits add up to 26, which is not a multiple of 3.
What is special about the number 48815?
It is a composite number with 8 divisors.