Q: What is the negative version of the number 21,515,889?
A: -21,515,889
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:
| 21,515,887 | 21,515,888 | 21,515,890 | 21,515,891 |
| -21,515,887 | -21,515,888 | -21,515,890 | -21,515,891 |