Q: What is the negative version of the number 21,581,749?
A: -21,581,749
Negative numbers are usually written with - in front of them. They represent a number that is less than zero.
Here are more examples of negative numbers in sequence:
| 21,581,747 | 21,581,748 | 21,581,750 | 21,581,751 |
| -21,581,747 | -21,581,748 | -21,581,750 | -21,581,751 |