Divisor 19791

To determine if any number is divisible by 19791, you must apply 2 tests successively. If all of them 'pass' - that is, if your number is divisible by 27 and 733 - then it is divisible by 19791.

The following tests must pass:

• Test if a number is divisible by 27
• Test if a number is divisible by 733

Easy!