Question

What is an integer?
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Answer 1

An integer is colloquially defined as a number that can be written without a fractional component. For example - 21, 4, 0, and −2048 are integers, while 9.75, 5+1/2, and √2 are not.

Answer 2

Integer, whole-valued positive or negative number or 0. The integers are generated from the set of counting numbers 1, 2, 3,… and the operation of subtraction. When a counting number is subtracted from itself, the result is zero; for example, 4 − 4 = 0.