 # Integer Calculator

Check the number is even or odd An integer calculator is a free online tool that displays whether the given integer is an even or odd integer. BYJU’S online integer calculator tool makes the calculations faster and easier where it displays the result in a fraction of seconds.

## How to Use Integer Calculator?

The procedure to use integer calculator is as follows:

Step 1: Enter any integer in the input field

Step 2: Now click the button “Solve” to get the output

Step 3: The result will be displayed in the output field

### What are Integers?

Integers are whole numbers, but it includes negative numbers also. The integer can be positive, negative or zero, but it cannot include fractional numbers. The set of integers can be denoted by the symbol “Z”, and it is defined as follows:

Z = {………, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, ….. }

The integers can be either even or odd numbers. The number which is divided by 2 and leaves the remainder zero “0” is called even numbers. The number leaves the remainder 1 when it is divided by 2 is called odd numbers.

Examples of even number = -2, 2, 6, 10

Examples of odd number = -5, 3, 7, 13

### Standard Form

The standard form to represent the even number and odd numbers are as follows:

Even Number = 2n

Odd Number = 2n+1

Where “n” can be any integer.

## Frequently Asked Questions on Integer Calculator

### Is 0 an even number or odd number?

Zero is an even number because it obeys all the properties of the even number such as divisibility rule, and number line rule.

### Is 2.5 an even number?

The number 2.5 is neither even nor odd because it does not obey the property of even and odd numbers.

### Why are odd numbers of form 2n+1 or 2n-1?

If “ n” is an integer, the even numbers are represented in the form “2n”. Since odd numbers are preceding and succeeding integers of 2n, it is represented in the form “2n-1”, and “2n+1”.