The number 35240
35240 is a composite number with 16 divisors. Its prime factorisation is × 5 × 881. Divisors (16): 1, 2, 4, 5, 8, 10, 20, 40, 881, 1762, 3524, 4405, 7048, 8810, 17620, 35240.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
35240 has no famous special property in the usual lists (prime, square, cube, triangular, Fibonacci, palindrome, perfect), but it is still a composite number.
- 2
35240 is composite. Its prime factorisation is
- 3
The divisors add up to 79380; without 35240 itself that is 44140, so 35240 is abundant (44140 is more than 35240). Euler's totient φ(35240) = 14080 numbers up to 35240 share no factor with it.
- 4
The digits of 35240 add up to 14, and repeating that until one digit is left gives the digital root 5. The Collatz sequence (halve if even, else 3n+1) takes 98 steps to reach 1.
LaTeX source of the formulas on this page
\[ 35240 = 2^{3} \times 5 \times 881 \]35240 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 16 |
| Sum of divisors | 79380 |
| Euler totient φ(n) | 14080 |
| Square | 1241857600 |
| Cube | 43763061824000 |
| Square root | 187.723200 (= 2√8810) |
| Digit sum / digital root | 14 / 5 |
| Collatz steps to 1 | 98 |
| Scientific notation | 3.524 × |
35240 in other forms
| Form | Value |
|---|---|
| In words | thirty-five thousand two hundred and forty |
| Binary (base 2) | 1000100110101000 |
| Octal (base 8) | 104650 |
| Hexadecimal (base 16) | 89A8 |
| Base 3 | 1210100012 |
| As time | 35240 seconds = 9 h 47 min 20 s |
Is 35240 divisible by 2 to 12?
| Divisor | Answer | Rule |
|---|---|---|
| 2 | Yes (35240 ÷ 2 = 17620) | A number is divisible by 2 if the last digit is even (0, 2, 4, 6, 8). |
| 3 | No (remainder 2) | A number is divisible by 3 if the digits add up to a multiple of 3. |
| 4 | Yes (35240 ÷ 4 = 8810) | A number is divisible by 4 if the last two digits make a multiple of 4. |
| 5 | Yes (35240 ÷ 5 = 7048) | A number is divisible by 5 if the last digit is 0 or 5. |
| 6 | No (remainder 2) | 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 (35240 ÷ 8 = 4405) | A number is divisible by 8 if the last three digits make a multiple of 8. |
| 9 | No (remainder 5) | A number is divisible by 9 if the digits add up to a multiple of 9. |
| 10 | Yes (35240 ÷ 10 = 3524) | A number is divisible by 10 if the last digit is 0. |
| 11 | No (remainder 7) | A number is divisible by 11 if the alternating sum of the digits is a multiple of 11. |
| 12 | No (remainder 8) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 35240 a prime number?
No. 35240 = × 5 × 881, so it is divisible by 2.
What are the factors of 35240?
1, 2, 4, 5, 8, 10, 20, 40, 881, 1762, 3524, 4405, 7048, 8810, 17620, 35240.
What is 35240 in binary?
1000100110101000 (hexadecimal 89A8, octal 104650).
What is the square root of 35240?
About 187.7232, exactly 2√8810.
Is 35240 divisible by 3?
No. Its digits add up to 14, which is not a multiple of 3.
What is special about the number 35240?
It is a composite number with 16 divisors.