Can you find the smallest number whose letters are in alphabetical order when spelled out in English?

  • 1
    $\begingroup$ I believe that this problem is very well known, please don't post them here. $\endgroup$
    – Duck
    Oct 9, 2019 at 1:20
  • $\begingroup$ Again I didn't know about this problem - only learned today. $\endgroup$ Oct 9, 2019 at 2:45
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    $\begingroup$ And the smallest number with REVERSE alphabetical order is ONE! $\endgroup$
    – DrD
    Oct 10, 2019 at 8:48

1 Answer 1


I believe that would be...



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