What is 28 factorial ?

To find 28 factorial, or 28!, simply use the formula that multiplies the number 28 by all positive whole numbers less than it.

Let's look at how to calculate the Factorial of Twenty-eight :

  28! is exactly : 304888344611713860501504000000

  Factorial of 28 can be calculated as:
28! = 28 x 27 x 26 x 25 x ... x 3 x 2 x 1

  The number of trailing zeros in 28! is 6

  The number of digits in 28 factorial is 30.

• 24 Factorial
• 25 Factorial
• 26 Factorial
• 27 Factorial
• Factorial of 29
• Factorial of 30
• Factorial of 31
• Factorial of 32

A factorial is represented by an integer and an exclamation symbol. In Mathematics, factorial is a multiplication operation of natural numbers .

It multiplies the number by every standard number that is less than it .

Symbolically, it is displayed as "!".

The function is used, among other things, to find the "n" way pieces can be positioned .

To find the factorial of any given number, change the value for n in the given rule :

n! = n × (n-1) × (n-2) × (n-3) × ….× 3 × 2 × 1

The expansion of the formula gives the numbers to be multiplied at the same time to find the factorial of the number.

We can also measure a factorial from the previous one. The factorial of any number is that number multiplied the factorial of (that number minus 1).

So the rule is : n! = n × (n−1)!

Example :
28! Factorial = 28 x 27 x 26 x 25 x ... x 3 x 2 x 1 = 28 × 27! = 304888344611713860501504000000

The best use of factorial is in Combinations and Permutations.

Example : Determine how to arrange letters without repeating?

There one way for 1 letter "a":
2 ways for two letters "ab": ab, ba.
There are 6 ways for 3 letters "abc": abc acb cab bac bca.
There are 24 ways for 1234 of the letters "abcd"

28 in French

28 in English

Factors of 28