Natural numbers along with zero (0) are referred to as **whole numbers**. We know that natural numbers refer to a set of counting numbers starting from 1, 2, 3, 4 and so on. In simple words, whole numbers are a set of numbers without fractions, decimals, or even negative integers. It is a collection of positive integers and zero. Or we can say that whole numbers are the set of non-negative integers. The primary difference between natural and whole numbers is the presence of zero in the whole numbers set.

### Whole Number Definition

Whole Numbers are the set of natural numbers along with the number 0. The set of whole numbers in mathematics is given as {0, 1, 2, 3, …} which is denoted by the symbol** W.**

W = {0, 1, 2, 3, 4, …}

Here are some facts about whole numbers, which will help you understand them better:

- All natural numbers are whole numbers.
- All counting numbers are whole numbers.
- All positive integers including zero are whole numbers.
- All whole numbers are real numbers.

### Whole Number Symbol

The symbol used to represent whole numbers is the alphabet ‘W’ in the uppercase, W = 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, …