Real Number: -2 is a real number because it can be found on the real number line.
Integer: -2 is an integer because it is a whole number with no fractional or decimal part.
Rational Number: -2 is also a rational number because it can be expressed as a ratio of two integers (-2/1 in this case).
Negative Number: -2 is a negative number because it is less than zero.
Non-Positive Number: -2 is a non-positive number because it is either negative or zero.
So, -2 is a real, integer, rational, negative, and non-positive number.