The number 49378
49378 is a composite number with 8 divisors. Its prime factorisation is 2 × 7 × 3527. Divisors (8): 1, 2, 7, 14, 3527, 7054, 24689, 49378.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 49378: a happy number: repeatedly adding the squares of its digits reaches 1.
- 2
49378 is composite. Its prime factorisation is
- 3
The divisors add up to 84672; without 49378 itself that is 35294, so 49378 is deficient (35294 is less than 49378). Euler's totient φ(49378) = 21156 numbers up to 49378 share no factor with it.
- 4
The digits of 49378 add up to 31, and repeating that until one digit is left gives the digital root 4. The Collatz sequence (halve if even, else 3n+1) takes 39 steps to reach 1.
LaTeX source of the formulas on this page
\[ 49378 = 2 \times 7 \times 3527 \]
49378 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 8 |
| Sum of divisors | 84672 |
| Euler totient φ(n) | 21156 |
| Square | 2438186884 |
| Cube | 120392791958152 |
| Square root | 222.211611 |
| Digit sum / digital root | 31 / 4 |
| Collatz steps to 1 | 39 |
| Scientific notation | 4.9378 × |
49378 in other forms
| Form | Value |
|---|---|
| In words | forty-nine thousand three hundred and seventy-eight |
| Binary (base 2) | 1100000011100010 |
| Octal (base 8) | 140342 |
| Hexadecimal (base 16) | C0E2 |
| Base 3 | 2111201211 |
| As time | 49378 seconds = 13 h 42 min 58 s |
Is 49378 divisible by 2 to 12?
| Divisor | Answer | Rule |
|---|---|---|
| 2 | Yes (49378 ÷ 2 = 24689) | 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 | No (remainder 3) | 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 | Yes (49378 ÷ 7 = 7054) | 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 | No (remainder 8) | A number is divisible by 10 if the last digit is 0. |
| 11 | No (remainder 10) | 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 49378 a prime number?
No. 49378 = 2 × 7 × 3527, so it is divisible by 2.
What are the factors of 49378?
1, 2, 7, 14, 3527, 7054, 24689, 49378.
What is 49378 in binary?
1100000011100010 (hexadecimal C0E2, octal 140342).
What is the square root of 49378?
About 222.2116.
Is 49378 divisible by 3?
No. Its digits add up to 31, which is not a multiple of 3.
What is special about the number 49378?
49378 is a happy number: repeatedly adding the squares of its digits reaches 1.