Q: What is the negative version of the number 21,688,400?
A: -21,688,400
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:
| 21,688,398 | 21,688,399 | 21,688,401 | 21,688,402 |
| -21,688,398 | -21,688,399 | -21,688,401 | -21,688,402 |