The number 71349
71349 is a composite number with 8 divisors. Its prime factorisation is 3 × 17 × 1399. Divisors (8): 1, 3, 17, 51, 1399, 4197, 23783, 71349.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
71349 has no famous special property in the usual lists (prime, square, cube, triangular, Fibonacci, palindrome, perfect), but it is still a composite number.
- 2
71349 is composite. Its prime factorisation is
- 3
The divisors add up to 100800; without 71349 itself that is 29451, so 71349 is deficient (29451 is less than 71349). Euler's totient φ(71349) = 44736 numbers up to 71349 share no factor with it.
- 4
The digits of 71349 add up to 24, and repeating that until one digit is left gives the digital root 6. The Collatz sequence (halve if even, else 3n+1) takes 50 steps to reach 1.
LaTeX source of the formulas on this page
\[ 71349 = 3 \times 17 \times 1399 \]
71349 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 8 |
| Sum of divisors | 100800 |
| Euler totient φ(n) | 44736 |
| Square | 5090679801 |
| Cube | 363214913121549 |
| Square root | 267.112336 |
| Digit sum / digital root | 24 / 6 |
| Collatz steps to 1 | 50 |
| Scientific notation | 7.1349 × |
71349 in other forms
| Form | Value |
|---|---|
| In words | seventy-one thousand three hundred and forty-nine |
| Binary (base 2) | 10001011010110101 |
| Octal (base 8) | 213265 |
| Hexadecimal (base 16) | 116B5 |
| Base 3 | 10121212120 |
| As time | 71349 seconds = 19 h 49 min 9 s |
Is 71349 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 | Yes (71349 ÷ 3 = 23783) | 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 4) | A number is divisible by 5 if the last digit is 0 or 5. |
| 6 | No (remainder 3) | A number is divisible by 6 if it is divisible by both 2 and 3. |
| 7 | No (remainder 5) | 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 5) | A number is divisible by 8 if the last three digits make a multiple of 8. |
| 9 | No (remainder 6) | A number is divisible by 9 if the digits add up to a multiple of 9. |
| 10 | No (remainder 9) | 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 9) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 71349 a prime number?
No. 71349 = 3 × 17 × 1399, so it is divisible by 3.
What are the factors of 71349?
1, 3, 17, 51, 1399, 4197, 23783, 71349.
What is 71349 in binary?
10001011010110101 (hexadecimal 116B5, octal 213265).
What is the square root of 71349?
About 267.1123.
Is 71349 divisible by 3?
Yes. Its digits add up to 24, a multiple of 3.
What is special about the number 71349?
It is a composite number with 8 divisors.