The number 30550
30550 is a composite number with 24 divisors. Its prime factorisation is 2 × × 13 × 47. Divisors (24): 1, 2, 5, 10, 13, 25, 26, 47, 50, 65, 94, 130, 235, 325, 470, 611 … 30550.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 30550: a Harshad number: divisible by its digit sum 13.
- 2
30550 is composite. Its prime factorisation is
- 3
The divisors add up to 62496; without 30550 itself that is 31946, so 30550 is abundant (31946 is more than 30550). Euler's totient φ(30550) = 11040 numbers up to 30550 share no factor with it.
- 4
The digits of 30550 add up to 13, and repeating that until one digit is left gives the digital root 4. The Collatz sequence (halve if even, else 3n+1) takes 85 steps to reach 1.
LaTeX source of the formulas on this page
\[ 30550 = 2 \times 5^{2} \times 13 \times 47 \]30550 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 24 |
| Sum of divisors | 62496 |
| Euler totient φ(n) | 11040 |
| Square | 933302500 |
| Cube | 28512391375000 |
| Square root | 174.785583 (= 5√1222) |
| Digit sum / digital root | 13 / 4 |
| Collatz steps to 1 | 85 |
| Scientific notation | 3.055 × |
30550 in other forms
| Form | Value |
|---|---|
| In words | thirty thousand five hundred and fifty |
| Binary (base 2) | 111011101010110 |
| Octal (base 8) | 73526 |
| Hexadecimal (base 16) | 7756 |
| Base 3 | 1112220111 |
| As time | 30550 seconds = 8 h 29 min 10 s |
Is 30550 divisible by 2 to 12?
| Divisor | Answer | Rule |
|---|---|---|
| 2 | Yes (30550 ÷ 2 = 15275) | 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 2) | A number is divisible by 4 if the last two digits make a multiple of 4. |
| 5 | Yes (30550 ÷ 5 = 6110) | 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 2) | 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 6) | 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 | Yes (30550 ÷ 10 = 3055) | 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 10) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 30550 a prime number?
No. 30550 = 2 × × 13 × 47, so it is divisible by 2.
What are the factors of 30550?
1, 2, 5, 10, 13, 25, 26, 47, 50, 65, 94, 130, 235, 325, 470, 611, 650, 1175, 1222, 2350, 3055, 6110, 15275, 30550.
What is 30550 in binary?
111011101010110 (hexadecimal 7756, octal 73526).
What is the square root of 30550?
About 174.7856, exactly 5√1222.
Is 30550 divisible by 3?
No. Its digits add up to 13, which is not a multiple of 3.
What is special about the number 30550?
30550 is a Harshad number: divisible by its digit sum 13.