Composite numbers.
2
Prime numbers are those numbers that can only be divided evenly by 1 and themselves. For example 7 cannot be divided evenly by 2, 3, 4, 5, or 6. It is prime. On the other hand 9, can be divided evenly by 3. Therefore it is not prime.
All of them can be divided by 2, but not necessarily evenly. Only the even numbers from 2 to 798 can be evenly divided by two. There are 399 of those.
Any of its factors
7 is a prime number and is also too small to have any numbers evenly divided into it.
19
Composite numbers.
An infinite number of of multiples of 24 can be divided by 24 evenly.
These whole numbers can be divided into 20 evenly: 1, 2, 4, 5, 10, 20.
Yes.
1,11,19,209
2,3,4,6,8,12,24
2
the sum of all whole numbers between 247,001 and 247,140 that can be divided exactly by 25 is 3,459,987.
Prime numbers are those numbers that can only be divided evenly by 1 and themselves. For example 7 cannot be divided evenly by 2, 3, 4, 5, or 6. It is prime. On the other hand 9, can be divided evenly by 3. Therefore it is not prime.
All of them can be divided by 2, but not necessarily evenly. Only the even numbers from 2 to 798 can be evenly divided by two. There are 399 of those.