Is 530 787 divisible by 9?
Solution
To determine if a number is divisible by 9, you add up all the digits in the number. If the sum is divisible by 9, then the original number is also divisible by 9.
Let's add up the digits in 530787:
5 + 3 + 0 + 7 + 8 + 7 = 30
30 is not divisible by 9 (9 * 3 = 27 and 9 * 4 = 36, so 30 doesn't fit evenly into a multiple of 9).
Therefore, 530787 is not divisible by 9.
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