The number 80738
80738 is a composite number with 16 divisors. Its prime factorisation is 2 × 7 × 73 × 79. Divisors (16): 1, 2, 7, 14, 73, 79, 146, 158, 511, 553, 1022, 1106, 5767, 11534, 40369, 80738.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
80738 has no famous special property in the usual lists (prime, square, cube, triangular, Fibonacci, palindrome, perfect), but it is still a composite number.
- 2
80738 is composite. Its prime factorisation is
- 3
The divisors add up to 142080; without 80738 itself that is 61342, so 80738 is deficient (61342 is less than 80738). Euler's totient φ(80738) = 33696 numbers up to 80738 share no factor with it.
- 4
The digits of 80738 add up to 26, and repeating that until one digit is left gives the digital root 8. The Collatz sequence (halve if even, else 3n+1) takes 138 steps to reach 1.
LaTeX source of the formulas on this page
\[ 80738 = 2 \times 7 \times 73 \times 79 \]
80738 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 16 |
| Sum of divisors | 142080 |
| Euler totient φ(n) | 33696 |
| Square | 6518624644 |
| Cube | 526300716507272 |
| Square root | 284.144330 |
| Digit sum / digital root | 26 / 8 |
| Collatz steps to 1 | 138 |
| Scientific notation | 8.0738 × |
80738 in other forms
| Form | Value |
|---|---|
| In words | eighty thousand seven hundred and thirty-eight |
| Binary (base 2) | 10011101101100010 |
| Octal (base 8) | 235542 |
| Hexadecimal (base 16) | 13B62 |
| Base 3 | 11002202022 |
| As time | 80738 seconds = 22 h 25 min 38 s |
Is 80738 divisible by 2 to 12?
| Divisor | Answer | Rule |
|---|---|---|
| 2 | Yes (80738 ÷ 2 = 40369) | 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 2) | A number is divisible by 4 if the last two digits make a multiple of 4. |
| 5 | No (remainder 3) | 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 | Yes (80738 ÷ 7 = 11534) | 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 8) | A number is divisible by 9 if the digits add up to a multiple of 9. |
| 10 | No (remainder 8) | A number is divisible by 10 if the last digit is 0. |
| 11 | No (remainder 9) | A number is divisible by 11 if the alternating sum of the digits is a multiple of 11. |
| 12 | No (remainder 2) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 80738 a prime number?
No. 80738 = 2 × 7 × 73 × 79, so it is divisible by 2.
What are the factors of 80738?
1, 2, 7, 14, 73, 79, 146, 158, 511, 553, 1022, 1106, 5767, 11534, 40369, 80738.
What is 80738 in binary?
10011101101100010 (hexadecimal 13B62, octal 235542).
What is the square root of 80738?
About 284.1443.
Is 80738 divisible by 3?
No. Its digits add up to 26, which is not a multiple of 3.
What is special about the number 80738?
It is a composite number with 16 divisors.