The number 30250
30250 is a composite number with 24 divisors. Its prime factorisation is 2 × × . Divisors (24): 1, 2, 5, 10, 11, 22, 25, 50, 55, 110, 121, 125, 242, 250, 275, 550 … 30250.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 30250: a Harshad number: divisible by its digit sum 10.
- 2
30250 is composite. Its prime factorisation is
- 3
The divisors add up to 62244; without 30250 itself that is 31994, so 30250 is abundant (31994 is more than 30250). Euler's totient φ(30250) = 11000 numbers up to 30250 share no factor with it.
- 4
The digits of 30250 add up to 10, and repeating that until one digit is left gives the digital root 1. The Collatz sequence (halve if even, else 3n+1) takes 41 steps to reach 1.
LaTeX source of the formulas on this page
\[ 30250 = 2 \times 5^{3} \times 11^{2} \]30250 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 24 |
| Sum of divisors | 62244 |
| Euler totient φ(n) | 11000 |
| Square | 915062500 |
| Cube | 27680640625000 |
| Square root | 173.925271 (= 55√10) |
| Digit sum / digital root | 10 / 1 |
| Collatz steps to 1 | 41 |
| Scientific notation | 3.025 × |
30250 in other forms
| Form | Value |
|---|---|
| In words | thirty thousand two hundred and fifty |
| Binary (base 2) | 111011000101010 |
| Octal (base 8) | 73052 |
| Hexadecimal (base 16) | 762A |
| Base 3 | 1112111101 |
| As time | 30250 seconds = 8 h 24 min 10 s |
Is 30250 divisible by 2 to 12?
| Divisor | Answer | Rule |
|---|---|---|
| 2 | Yes (30250 ÷ 2 = 15125) | 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 (30250 ÷ 5 = 6050) | 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 3) | 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 2) | 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 | Yes (30250 ÷ 10 = 3025) | A number is divisible by 10 if the last digit is 0. |
| 11 | Yes (30250 ÷ 11 = 2750) | 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 30250 a prime number?
No. 30250 = 2 × × , so it is divisible by 2.
What are the factors of 30250?
1, 2, 5, 10, 11, 22, 25, 50, 55, 110, 121, 125, 242, 250, 275, 550, 605, 1210, 1375, 2750, 3025, 6050, 15125, 30250.
What is 30250 in binary?
111011000101010 (hexadecimal 762A, octal 73052).
What is the square root of 30250?
About 173.9253, exactly 55√10.
Is 30250 divisible by 3?
No. Its digits add up to 10, which is not a multiple of 3.
What is special about the number 30250?
30250 is a Harshad number: divisible by its digit sum 10.