Multiple
A multiple of a whole number is the product of that whole number and another whole number. When someone says that a number is a multiple of another number, it means that the other number can be multiplied by an integer to form the first number; 4 is a multiple of 2 because 2 × 2 = 4, but 4 is not a multiple of 3 because 3 cannot be multiplied by an integer to get a result of 4 (3 × 1.33 = 4).
Examples  
Multiples of 4 include 0, 4, 8, 12,...  


Multiples of 6 include 0, 6, 12, 18,...  

Properties of multiples
 0 is a multiple of everything, since zero multiplied by any number is still zero.
 Every integer is a multiple of itself because anything multiplied by 1 is the same number. So any integer can be multiplied by 1 to result in said integer, making it a multiple of itself.
 The product of an integer, n, and any integer, is a multiple of n. This should make sense because it fits the definition of what a multiple is, described above.
 If two integers, designated A and B, are a multiple of another number, n, then A + B and A  B are also multiples of n.
 Example: 4 and 8 are multiples of 2. 8 + 4 = 12; 8  4 = 4. Both 4 and 12 are also multiples of 2.
See also common multiple, least common multiple.
Related words multiplication, multiply.