It is divisible by 2, 5 and 10 but not the rest.
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The foolproof way is to divide 4 into it. If the answer is a whole number, it's divisible by 4. You can also tell by looking at it. If the last two digits are a multiple of 4, like 24 or 80, the whole number is divisible by 4.
It's very easy to test a number to see if it is divisible by 4 or by 9. If it passes both tests, then it is divisible by 4x9=36.To test for divisibility by 9, add the digits of the number. If the sum is divisible by 9, then the number is divisible by 9.To test for divisibility by 4, look at the last two digits. If they are a multiple of 4, then the number is divisible by 4.
An even number is exactly divisible by an even number, 1112 divided by 2 is 556
40 is divisible by 1, 2, 4, 5, 8, 10, 20 and 40.
Any number that ends in an even number (0, 2, 4, 6, 8) is divisible by 2.