Q: What is the negative version of the number 15,721,638?
A: -15,721,638
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:
| 15,721,636 | 15,721,637 | 15,721,639 | 15,721,640 |
| -15,721,636 | -15,721,637 | -15,721,639 | -15,721,640 |