The number 73490
73490 is a composite number with 8 divisors. Its prime factorisation is 2 × 5 × 7349. Divisors (8): 1, 2, 5, 10, 7349, 14698, 36745, 73490.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
73490 has no famous special property in the usual lists (prime, square, cube, triangular, Fibonacci, palindrome, perfect), but it is still a composite number.
- 2
73490 is composite. Its prime factorisation is
- 3
The divisors add up to 132300; without 73490 itself that is 58810, so 73490 is deficient (58810 is less than 73490). Euler's totient φ(73490) = 29392 numbers up to 73490 share no factor with it.
- 4
The digits of 73490 add up to 23, and repeating that until one digit is left gives the digital root 5. The Collatz sequence (halve if even, else 3n+1) takes 143 steps to reach 1.
LaTeX source of the formulas on this page
\[ 73490 = 2 \times 5 \times 7349 \]
73490 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 8 |
| Sum of divisors | 132300 |
| Euler totient φ(n) | 29392 |
| Square | 5400780100 |
| Cube | 396903329549000 |
| Square root | 271.090391 |
| Digit sum / digital root | 23 / 5 |
| Collatz steps to 1 | 143 |
| Scientific notation | 7.349 × |
73490 in other forms
| Form | Value |
|---|---|
| In words | seventy-three thousand four hundred and ninety |
| Binary (base 2) | 10001111100010010 |
| Octal (base 8) | 217422 |
| Hexadecimal (base 16) | 11F12 |
| Base 3 | 10201210212 |
| As time | 73490 seconds = 20 h 24 min 50 s |
Is 73490 divisible by 2 to 12?
| Divisor | Answer | Rule |
|---|---|---|
| 2 | Yes (73490 ÷ 2 = 36745) | 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 | Yes (73490 ÷ 5 = 14698) | 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 4) | 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 5) | A number is divisible by 9 if the digits add up to a multiple of 9. |
| 10 | Yes (73490 ÷ 10 = 7349) | A number is divisible by 10 if the last digit is 0. |
| 11 | No (remainder 10) | 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 73490 a prime number?
No. 73490 = 2 × 5 × 7349, so it is divisible by 2.
What are the factors of 73490?
1, 2, 5, 10, 7349, 14698, 36745, 73490.
What is 73490 in binary?
10001111100010010 (hexadecimal 11F12, octal 217422).
What is the square root of 73490?
About 271.0904.
Is 73490 divisible by 3?
No. Its digits add up to 23, which is not a multiple of 3.
What is special about the number 73490?
It is a composite number with 8 divisors.