The number 27041
27041 is a composite number with 4 divisors. Its prime factorisation is 7 × 3863. Divisors (4): 1, 7, 3863, 27041.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 27041: a happy number: repeatedly adding the squares of its digits reaches 1; a semiprime: 7 × 3863, the product of two primes.
- 2
27041 is composite. Its prime factorisation is
- 3
The divisors add up to 30912; without 27041 itself that is 3871, so 27041 is deficient (3871 is less than 27041). Euler's totient φ(27041) = 23172 numbers up to 27041 share no factor with it.
- 4
The digits of 27041 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 77 steps to reach 1.
LaTeX source of the formulas on this page
\[ 27041 = 7 \times 3863 \]
27041 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 4 |
| Sum of divisors | 30912 |
| Euler totient φ(n) | 23172 |
| Square | 731215681 |
| Cube | 19772803229921 |
| Square root | 164.441479 |
| Digit sum / digital root | 14 / 5 |
| Collatz steps to 1 | 77 |
| Scientific notation | 2.7041 × |
27041 in other forms
| Form | Value |
|---|---|
| In words | twenty-seven thousand and forty-one |
| Binary (base 2) | 110100110100001 |
| Octal (base 8) | 64641 |
| Hexadecimal (base 16) | 69A1 |
| Base 3 | 1101002112 |
| As time | 27041 seconds = 7 h 30 min 41 s |
Is 27041 divisible by 2 to 12?
| Divisor | Answer | Rule |
|---|---|---|
| 2 | No (remainder 1) | 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 | No (remainder 1) | A number is divisible by 4 if the last two digits make a multiple of 4. |
| 5 | No (remainder 1) | A number is divisible by 5 if the last digit is 0 or 5. |
| 6 | No (remainder 5) | A number is divisible by 6 if it is divisible by both 2 and 3. |
| 7 | Yes (27041 ÷ 7 = 3863) | 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 1) | 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 | No (remainder 1) | A number is divisible by 10 if the last digit is 0. |
| 11 | No (remainder 3) | A number is divisible by 11 if the alternating sum of the digits is a multiple of 11. |
| 12 | No (remainder 5) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 27041 a prime number?
No. 27041 = 7 × 3863, so it is divisible by 7.
What are the factors of 27041?
1, 7, 3863, 27041.
What is 27041 in binary?
110100110100001 (hexadecimal 69A1, octal 64641).
What is the square root of 27041?
About 164.4415.
Is 27041 divisible by 3?
No. Its digits add up to 14, which is not a multiple of 3.
What is special about the number 27041?
27041 is a happy number: repeatedly adding the squares of its digits reaches 1; a semiprime: 7 × 3863, the product of two primes.