No it is not. If it is an integer eg. (1), it is a natural number
1,2,4,7,14,28
28 does not have a square root.
That would be 28 itself, since 28 is a multiple of 7.
A natural number does not require rounding to a tenth because it is already rounded, not just to a tenth but to a unit.
Any number that isn't 14, 28, 42, 56, etc. or 14x (where x is a natural number). For example, 15 is not a multiple of 14.
No, 28 is not a square number.
28 is, itself, a whole number.
no..a natural number is a whole number
there is a zero in a natural number.
No, but is a natural number.
Depending on your definition of a natural number, 0 may or may not be a natural number. If you don't think 0 is a natural number, then it will be the only non-natural number that is whole.
A multiple of a natural number should be another natural number.