The number 71449
71449 is a composite number with 8 divisors. Its prime factorisation is 7 × 59 × 173. Divisors (8): 1, 7, 59, 173, 413, 1211, 10207, 71449.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
71449 has no famous special property in the usual lists (prime, square, cube, triangular, Fibonacci, palindrome, perfect), but it is still a composite number.
- 2
71449 is composite. Its prime factorisation is
- 3
The divisors add up to 83520; without 71449 itself that is 12071, so 71449 is deficient (12071 is less than 71449). Euler's totient φ(71449) = 59856 numbers up to 71449 share no factor with it.
- 4
The digits of 71449 add up to 25, and repeating that until one digit is left gives the digital root 7. The Collatz sequence (halve if even, else 3n+1) takes 249 steps to reach 1.
LaTeX source of the formulas on this page
\[ 71449 = 7 \times 59 \times 173 \]
71449 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 8 |
| Sum of divisors | 83520 |
| Euler totient φ(n) | 59856 |
| Square | 5104959601 |
| Cube | 364744258531849 |
| Square root | 267.299458 |
| Digit sum / digital root | 25 / 7 |
| Collatz steps to 1 | 249 |
| Scientific notation | 7.1449 × |
71449 in other forms
| Form | Value |
|---|---|
| In words | seventy-one thousand four hundred and forty-nine |
| Binary (base 2) | 10001011100011001 |
| Octal (base 8) | 213431 |
| Hexadecimal (base 16) | 11719 |
| Base 3 | 10122000021 |
| As time | 71449 seconds = 19 h 50 min 49 s |
Is 71449 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 1) | 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 1) | A number is divisible by 6 if it is divisible by both 2 and 3. |
| 7 | Yes (71449 ÷ 7 = 10207) | 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 7) | 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 4) | A number is divisible by 11 if the alternating sum of the digits is a multiple of 11. |
| 12 | No (remainder 1) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 71449 a prime number?
No. 71449 = 7 × 59 × 173, so it is divisible by 7.
What are the factors of 71449?
1, 7, 59, 173, 413, 1211, 10207, 71449.
What is 71449 in binary?
10001011100011001 (hexadecimal 11719, octal 213431).
What is the square root of 71449?
About 267.2995.
Is 71449 divisible by 3?
No. Its digits add up to 25, which is not a multiple of 3.
What is special about the number 71449?
It is a composite number with 8 divisors.