The number 38490
38490 is a composite number with 16 divisors. Its prime factorisation is 2 × 3 × 5 × 1283. Divisors (16): 1, 2, 3, 5, 6, 10, 15, 30, 1283, 2566, 3849, 6415, 7698, 12830, 19245, 38490.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
38490 has no famous special property in the usual lists (prime, square, cube, triangular, Fibonacci, palindrome, perfect), but it is still a composite number.
- 2
38490 is composite. Its prime factorisation is
- 3
The divisors add up to 92448; without 38490 itself that is 53958, so 38490 is abundant (53958 is more than 38490). Euler's totient φ(38490) = 10256 numbers up to 38490 share no factor with it.
- 4
The digits of 38490 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 49 steps to reach 1.
LaTeX source of the formulas on this page
\[ 38490 = 2 \times 3 \times 5 \times 1283 \]
38490 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 16 |
| Sum of divisors | 92448 |
| Euler totient φ(n) | 10256 |
| Square | 1481480100 |
| Cube | 57022169049000 |
| Square root | 196.188685 |
| Digit sum / digital root | 24 / 6 |
| Collatz steps to 1 | 49 |
| Scientific notation | 3.849 × |
38490 in other forms
| Form | Value |
|---|---|
| In words | thirty-eight thousand four hundred and ninety |
| Binary (base 2) | 1001011001011010 |
| Octal (base 8) | 113132 |
| Hexadecimal (base 16) | 965A |
| Base 3 | 1221210120 |
| As time | 38490 seconds = 10 h 41 min 30 s |
Is 38490 divisible by 2 to 12?
| Divisor | Answer | Rule |
|---|---|---|
| 2 | Yes (38490 ÷ 2 = 19245) | A number is divisible by 2 if the last digit is even (0, 2, 4, 6, 8). |
| 3 | Yes (38490 ÷ 3 = 12830) | 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 (38490 ÷ 5 = 7698) | A number is divisible by 5 if the last digit is 0 or 5. |
| 6 | Yes (38490 ÷ 6 = 6415) | 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 6) | A number is divisible by 9 if the digits add up to a multiple of 9. |
| 10 | Yes (38490 ÷ 10 = 3849) | A number is divisible by 10 if the last digit is 0. |
| 11 | No (remainder 1) | A number is divisible by 11 if the alternating sum of the digits is a multiple of 11. |
| 12 | No (remainder 6) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 38490 a prime number?
No. 38490 = 2 × 3 × 5 × 1283, so it is divisible by 2.
What are the factors of 38490?
1, 2, 3, 5, 6, 10, 15, 30, 1283, 2566, 3849, 6415, 7698, 12830, 19245, 38490.
What is 38490 in binary?
1001011001011010 (hexadecimal 965A, octal 113132).
What is the square root of 38490?
About 196.1887.
Is 38490 divisible by 3?
Yes. Its digits add up to 24, a multiple of 3.
What is special about the number 38490?
It is a composite number with 16 divisors.