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Divisibility by 9
publish date: 2026/05/11 11:32:53.758827 UTC
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Is \(534{,}840\) divisible by 9?
Digit sum: \(5+3+4+8+4+0 = 24\)
Correct Answer
No — 24 is not divisible by 9.
Explanation
A number is divisible by 9 if its digit sum is divisible by 9. The digit sum is 24, and \(24 \div 9 = 2\) R 6. Since the remainder is not 0, 534,840 is not divisible by 9.
Reference
Mathematics for college students