The number 48921
48921 is a composite number with 8 divisors. Its prime factorisation is 3 × 23 × 709. Divisors (8): 1, 3, 23, 69, 709, 2127, 16307, 48921.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
48921 has no famous special property in the usual lists (prime, square, cube, triangular, Fibonacci, palindrome, perfect), but it is still a composite number.
- 2
48921 is composite. Its prime factorisation is
- 3
The divisors add up to 68160; without 48921 itself that is 19239, so 48921 is deficient (19239 is less than 48921). Euler's totient φ(48921) = 31152 numbers up to 48921 share no factor with it.
- 4
The digits of 48921 add up to 24, and repeating that until one digit is left gives the digital root 6. The Collatz sequence (halve if even, else 3n+1) takes 127 steps to reach 1.
LaTeX source of the formulas on this page
\[ 48921 = 3 \times 23 \times 709 \]
48921 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 8 |
| Sum of divisors | 68160 |
| Euler totient φ(n) | 31152 |
| Square | 2393264241 |
| Cube | 117080879933961 |
| Square root | 221.180921 |
| Digit sum / digital root | 24 / 6 |
| Collatz steps to 1 | 127 |
| Scientific notation | 4.8921 × |
48921 in other forms
| Form | Value |
|---|---|
| In words | forty-eight thousand nine hundred and twenty-one |
| Binary (base 2) | 1011111100011001 |
| Octal (base 8) | 137431 |
| Hexadecimal (base 16) | BF19 |
| Base 3 | 2111002220 |
| As time | 48921 seconds = 13 h 35 min 21 s |
Is 48921 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 | Yes (48921 ÷ 3 = 16307) | 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 1) | A number is divisible by 5 if the last digit is 0 or 5. |
| 6 | No (remainder 3) | A number is divisible by 6 if it is divisible by both 2 and 3. |
| 7 | No (remainder 5) | 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 6) | A number is divisible by 9 if the digits add up to a multiple of 9. |
| 10 | No (remainder 1) | 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 9) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 48921 a prime number?
No. 48921 = 3 × 23 × 709, so it is divisible by 3.
What are the factors of 48921?
1, 3, 23, 69, 709, 2127, 16307, 48921.
What is 48921 in binary?
1011111100011001 (hexadecimal BF19, octal 137431).
What is the square root of 48921?
About 221.1809.
Is 48921 divisible by 3?
Yes. Its digits add up to 24, a multiple of 3.
What is special about the number 48921?
It is a composite number with 8 divisors.