It is 0 because it is between two odd numbers which are -1 and +1
Yes, because if it is an even number it at least has 2, itself and 1
0 is even, but not positive.
The number 1.
The least multiple of any positive number is the number itself.
The square of every positive or negative even whole number is a positive even whole number. The square of every positive or negative odd whole number is a positive odd whole number. There are an infinite number of each kind.
12.
The LCM of two and any other positive even number is the other positive even number.
It is 1.
Positive 1
Any even number has at least one even factor.
Yes, the number zero. If you want to exclude zero too, there is no least positive number.
Positive