The number 30748
30748 is a composite number with 6 divisors. Its prime factorisation is × 7687. Divisors (6): 1, 2, 4, 7687, 15374, 30748.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
30748 has no famous special property in the usual lists (prime, square, cube, triangular, Fibonacci, palindrome, perfect), but it is still a composite number.
- 2
30748 is composite. Its prime factorisation is
- 3
The divisors add up to 53816; without 30748 itself that is 23068, so 30748 is deficient (23068 is less than 30748). Euler's totient φ(30748) = 15372 numbers up to 30748 share no factor with it.
- 4
The digits of 30748 add up to 22, and repeating that until one digit is left gives the digital root 4. The Collatz sequence (halve if even, else 3n+1) takes 59 steps to reach 1.
LaTeX source of the formulas on this page
\[ 30748 = 2^{2} \times 7687 \]30748 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 6 |
| Sum of divisors | 53816 |
| Euler totient φ(n) | 15372 |
| Square | 945439504 |
| Cube | 29070373868992 |
| Square root | 175.351076 (= 2√7687) |
| Digit sum / digital root | 22 / 4 |
| Collatz steps to 1 | 59 |
| Scientific notation | 3.0748 × |
30748 in other forms
| Form | Value |
|---|---|
| In words | thirty thousand seven hundred and forty-eight |
| Binary (base 2) | 111100000011100 |
| Octal (base 8) | 74034 |
| Hexadecimal (base 16) | 781C |
| Base 3 | 1120011211 |
| As time | 30748 seconds = 8 h 32 min 28 s |
Is 30748 divisible by 2 to 12?
| Divisor | Answer | Rule |
|---|---|---|
| 2 | Yes (30748 ÷ 2 = 15374) | 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 | Yes (30748 ÷ 4 = 7687) | A number is divisible by 4 if the last two digits make a multiple of 4. |
| 5 | No (remainder 3) | A number is divisible by 5 if the last digit is 0 or 5. |
| 6 | No (remainder 4) | 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 4) | A number is divisible by 8 if the last three digits make a multiple of 8. |
| 9 | No (remainder 4) | A number is divisible by 9 if the digits add up to a multiple of 9. |
| 10 | No (remainder 8) | 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 4) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 30748 a prime number?
No. 30748 = × 7687, so it is divisible by 2.
What are the factors of 30748?
1, 2, 4, 7687, 15374, 30748.
What is 30748 in binary?
111100000011100 (hexadecimal 781C, octal 74034).
What is the square root of 30748?
About 175.3511, exactly 2√7687.
Is 30748 divisible by 3?
No. Its digits add up to 22, which is not a multiple of 3.
What is special about the number 30748?
It is a composite number with 6 divisors.