Divide it by 4 and if you have a remainder of 0, Viola!
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The unit digits are 2/4/6/8/0
You can tell if the number ends in either 5 or 0
If last two digits of a number are divisible by 4 then number is a multiple of 4 for a number with more than 21 digit
Oh, dude, like, totally! So, to check if a number is a multiple of 4, you just need to see if it's divisible by 4 without any remainder. And guess what? 58 is not divisible by 4 because if you divide 58 by 4, you get 14 with a remainder of 2. So, in short, 58 is not a multiple of 4.
The number 12 has 4 and 6 as factors so 12 is a multiple of 4 and 6.