Yes, wholesome is a compound word.
It is two words with different meanings. When put together it forms one whole new word with another meaning.
whole: having all its proper parts or elements; complete.
some: being one unknown, unnamed, or unspecified unit or thing.
wholesome: helping to keep or improve the good condition of the mind, body, or spirit; healthy.
Threes examples (of many) are: wholesome, wholeness, wholeheartedly - and so on.
The word 'wholesome'.
The wholesome meal sustained him for hours on his long journey.
-- any mixed number -- any mis-spelled bagel or donut -- the word "wholesome"
the word "Wholesome"
the word Wholesome
wholesome
To wholesome
No, building is not a compound word.
The contraction (not a compound word) is doesn't.
Upwards is a compound word.
I suspect you are asking what are "whole numbers" in math. There are no such things as wholesome numbers in math. Now armed with the right word you are better prepared to begin to seek the answer.