The number 49240
49240 is a composite number with 16 divisors. Its prime factorisation is × 5 × 1231. Divisors (16): 1, 2, 4, 5, 8, 10, 20, 40, 1231, 2462, 4924, 6155, 9848, 12310, 24620, 49240.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
49240 has no famous special property in the usual lists (prime, square, cube, triangular, Fibonacci, palindrome, perfect), but it is still a composite number.
- 2
49240 is composite. Its prime factorisation is
- 3
The divisors add up to 110880; without 49240 itself that is 61640, so 49240 is abundant (61640 is more than 49240). Euler's totient φ(49240) = 19680 numbers up to 49240 share no factor with it.
- 4
The digits of 49240 add up to 19, and repeating that until one digit is left gives the digital root 1. The Collatz sequence (halve if even, else 3n+1) takes 158 steps to reach 1.
LaTeX source of the formulas on this page
\[ 49240 = 2^{3} \times 5 \times 1231 \]49240 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 16 |
| Sum of divisors | 110880 |
| Euler totient φ(n) | 19680 |
| Square | 2424577600 |
| Cube | 119386201024000 |
| Square root | 221.900879 (= 2√12310) |
| Digit sum / digital root | 19 / 1 |
| Collatz steps to 1 | 158 |
| Scientific notation | 4.924 × |
49240 in other forms
| Form | Value |
|---|---|
| In words | forty-nine thousand two hundred and forty |
| Binary (base 2) | 1100000001011000 |
| Octal (base 8) | 140130 |
| Hexadecimal (base 16) | C058 |
| Base 3 | 2111112201 |
| As time | 49240 seconds = 13 h 40 min 40 s |
Is 49240 divisible by 2 to 12?
| Divisor | Answer | Rule |
|---|---|---|
| 2 | Yes (49240 ÷ 2 = 24620) | 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 (49240 ÷ 4 = 12310) | A number is divisible by 4 if the last two digits make a multiple of 4. |
| 5 | Yes (49240 ÷ 5 = 9848) | 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 | Yes (49240 ÷ 8 = 6155) | 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 (49240 ÷ 10 = 4924) | 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 4) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 49240 a prime number?
No. 49240 = × 5 × 1231, so it is divisible by 2.
What are the factors of 49240?
1, 2, 4, 5, 8, 10, 20, 40, 1231, 2462, 4924, 6155, 9848, 12310, 24620, 49240.
What is 49240 in binary?
1100000001011000 (hexadecimal C058, octal 140130).
What is the square root of 49240?
About 221.9009, exactly 2√12310.
Is 49240 divisible by 3?
No. Its digits add up to 19, which is not a multiple of 3.
What is special about the number 49240?
It is a composite number with 16 divisors.