An even number is an integer which is "evenly divisible" by two. This means that if the integer is divided by 2, it yields no remainder. An even number does not have to be divided until a decimal is formed, that means it is not an even number. Eight is even but seven is not. Zero is an even number because zero divided by two equals zero, which despite not being a natural number, is an integer. Even numbers are either positive or negative.
An integer that is not an even number is an odd number
Addition and subtraction[change | change source]
Note: the symbol '±' mean either addition or subtraction.
- even ± even = even
- even ± odd = odd
- odd ± odd = even
0N, 2N, 4N, 6N, ... (where N is any natural number)
the result is always an even number.