Answer
528 is not perfect because:
1 + 2 + 3 + 4 + 6 + 8 + 11 + 12 + 16 + 22 + 24 + 33 + 44 + 48 + 66 + 88 + 132 + 176 + 264 ≠ 528
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Answer
528 is not perfect because:
1 + 2 + 3 + 4 + 6 + 8 + 11 + 12 + 16 + 22 + 24 + 33 + 44 + 48 + 66 + 88 + 132 + 176 + 264 ≠ 528