## Find Factorial of a Number in Kotlin

In this tutorial, you will learn how to calculate the factorial of a given number using Kotlin.

The factorial of a number is the product of all positive integers from 1 to that number. In Kotlin, you can use a loop to calculate the factorial of a given number. This process involves multiplying the current number with the previous result as you iterate through the numbers.

## Example

### Calculate Factorial

We’ll start with an example of calculating the factorial of a number:

Factorial of a number is the product of all positive integers from 1 to that number.

In this example, the `calculateFactorial()`

function uses a loop to calculate the factorial of the given number. The result is the product of all positive integers from 1 to the given number.

**Kotlin Program**

```
// Function to calculate factorial
fun calculateFactorial(number: Int): Long {
var factorial = 1L
for (i in 1..number) {
factorial *= i
}
return factorial
}
fun main() {
val number = 5
val result = calculateFactorial(number)
println("Factorial of $number is: $result")
}
```

**Output**

`Factorial of 5 is: 120`

## Summary

In this Kotlin Tutorial, we learned how to find the factorial of a given number in Kotlin, with the help of example programs.