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The number 8549176320 has all the digits arranged in alphabetical order.
With the exception of the number zero, the number 236719458 contains all the English names of the single-digit numbers in reverse alphabetical order.
The smallest number that when doubled contains all the same digits in a different order.
First, you order all the numbers in the set in order. Next, you find the very middle number in the set. Example: 1 3 8 10 19 8 is the median because the set is in order and it is the middle number.
No. As long as there are more than two, the number's composite.