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Divisibility rules
Find out in seconds whether a number divides evenly – without doing the division.
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Play in browser Google Play App StoreThe rules
- 2: the last digit is even.
- 3: the digit sum is divisible by 3.
- 4: the last two digits form a number divisible by 4 (1,236 → 36 ✓).
- 5: the last digit is 0 or 5.
- 9: the digit sum is divisible by 9 (4,752 → 18 ✓).
- 10: the last digit is 0.
Try it yourself
- Is 348 divisible by 4? = ?
- Is 1,236 divisible by 9? = ?
- Is 4,752 divisible by 9? = ?
- Is 2,314 divisible by 4? = ?
- Is 729 divisible by 3? = ?
- Is 1,005 divisible by 5? = ?
Show answers
- Is 348 divisible by 4? = Yes (48)
- Is 1,236 divisible by 9? = No (digit sum 12)
- Is 4,752 divisible by 9? = Yes (digit sum 18)
- Is 2,314 divisible by 4? = No (14)
- Is 729 divisible by 3? = Yes (digit sum 18)
- Is 1,005 divisible by 5? = Yes
Frequently asked questions
What about 6?
A number is divisible by 6 if it is divisible by both 2 and 3.