Q: What is the negative version of the number 21,517,172?
A: -21,517,172
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:
| 21,517,170 | 21,517,171 | 21,517,173 | 21,517,174 |
| -21,517,170 | -21,517,171 | -21,517,173 | -21,517,174 |