The number 15250
15250 is a composite number with 16 divisors. Its prime factorisation is 2 × × 61. Divisors (16): 1, 2, 5, 10, 25, 50, 61, 122, 125, 250, 305, 610, 1525, 3050, 7625, 15250.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
15250 has no famous special property in the usual lists (prime, square, cube, triangular, Fibonacci, palindrome, perfect), but it is still a composite number.
- 2
15250 is composite. Its prime factorisation is
- 3
The divisors add up to 29016; without 15250 itself that is 13766, so 15250 is deficient (13766 is less than 15250). Euler's totient φ(15250) = 6000 numbers up to 15250 share no factor with it.
- 4
The digits of 15250 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 84 steps to reach 1.
LaTeX source of the formulas on this page
\[ 15250 = 2 \times 5^{3} \times 61 \]15250 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 16 |
| Sum of divisors | 29016 |
| Euler totient φ(n) | 6000 |
| Square | 232562500 |
| Cube | 3546578125000 |
| Square root | 123.490890 (= 5√610) |
| Digit sum / digital root | 13 / 4 |
| Collatz steps to 1 | 84 |
| Scientific notation | 1.525 × |
15250 in other forms
| Form | Value |
|---|---|
| In words | fifteen thousand two hundred and fifty |
| Binary (base 2) | 11101110010010 |
| Octal (base 8) | 35622 |
| Hexadecimal (base 16) | 3B92 |
| Base 3 | 202220211 |
| As time | 15250 seconds = 4 h 14 min 10 s |
Is 15250 divisible by 2 to 12?
| Divisor | Answer | Rule |
|---|---|---|
| 2 | Yes (15250 ÷ 2 = 7625) | 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 (15250 ÷ 5 = 3050) | 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 2) | 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 (15250 ÷ 10 = 1525) | 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 10) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 15250 a prime number?
No. 15250 = 2 × × 61, so it is divisible by 2.
What are the factors of 15250?
1, 2, 5, 10, 25, 50, 61, 122, 125, 250, 305, 610, 1525, 3050, 7625, 15250.
What is 15250 in binary?
11101110010010 (hexadecimal 3B92, octal 35622).
What is the square root of 15250?
About 123.4909, exactly 5√610.
Is 15250 divisible by 3?
No. Its digits add up to 13, which is not a multiple of 3.
What is special about the number 15250?
It is a composite number with 16 divisors.