The number 3850
3850 is a composite number with 24 divisors. Its prime factorisation is 2 × × 7 × 11. Divisors (24): 1, 2, 5, 7, 10, 11, 14, 22, 25, 35, 50, 55, 70, 77, 110, 154 … 3850.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
3850 has no famous special property in the usual lists (prime, square, cube, triangular, Fibonacci, palindrome, perfect), but it is still a composite number.
- 2
3850 is composite. Its prime factorisation is
- 3
The divisors add up to 8928; without 3850 itself that is 5078, so 3850 is abundant (5078 is more than 3850). Euler's totient φ(3850) = 1200 numbers up to 3850 share no factor with it.
- 4
The digits of 3850 add up to 16, and repeating that until one digit is left gives the digital root 7. The Collatz sequence (halve if even, else 3n+1) takes 51 steps to reach 1.
LaTeX source of the formulas on this page
\[ 3850 = 2 \times 5^{2} \times 7 \times 11 \]3850 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 24 |
| Sum of divisors | 8928 |
| Euler totient φ(n) | 1200 |
| Square | 14822500 |
| Cube | 57066625000 |
| Square root | 62.048368 (= 5√154) |
| Digit sum / digital root | 16 / 7 |
| Collatz steps to 1 | 51 |
| Scientific notation | 3.85 × |
3850 in other forms
| Form | Value |
|---|---|
| In words | three thousand eight hundred and fifty |
| Roman numerals | MMMDCCCL |
| Binary (base 2) | 111100001010 |
| Octal (base 8) | 7412 |
| Hexadecimal (base 16) | F0A |
| Base 3 | 12021121 |
| As time | 3850 seconds = 1 h 4 min 10 s |
Is 3850 divisible by 2 to 12?
| Divisor | Answer | Rule |
|---|---|---|
| 2 | Yes (3850 ÷ 2 = 1925) | 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 (3850 ÷ 5 = 770) | 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 (3850 ÷ 7 = 550) | 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 7) | A number is divisible by 9 if the digits add up to a multiple of 9. |
| 10 | Yes (3850 ÷ 10 = 385) | A number is divisible by 10 if the last digit is 0. |
| 11 | Yes (3850 ÷ 11 = 350) | 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 3850 a prime number?
No. 3850 = 2 × × 7 × 11, so it is divisible by 2.
What are the factors of 3850?
1, 2, 5, 7, 10, 11, 14, 22, 25, 35, 50, 55, 70, 77, 110, 154, 175, 275, 350, 385, 550, 770, 1925, 3850.
What is 3850 in binary?
111100001010 (hexadecimal F0A, octal 7412).
What is the square root of 3850?
About 62.0484, exactly 5√154.
What is 3850 in Roman numerals?
MMMDCCCL.
Is 3850 divisible by 3?
No. Its digits add up to 16, which is not a multiple of 3.
What is special about the number 3850?
It is a composite number with 24 divisors.