The number is 17.
(The complete solution is too long and complicated to reproduce here in its entirety.)
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No, however there are even numbers less than 15. An even number is any number that can be divided by two evenly, so it can be greater than 15 too.
25
It is: 15-5 = 10
Yes 15 is a deficient number because its factors add upp to less than the number itself,which is 15.
7 or 13