What is the lowest whole number when spelled out in alphabetical order?

Answer 1

eight

to do this, you only need to look at the first 21 numbers and the beginnings of every set of tens. After that, the number will repeat with one of the numbers already listed ( ex. 28,866,425 starts with twenty-eight, which begins with twenty, which is the beginning of a set of tens).

zero one two

three four five

six seven eight

nine ten eleven

twelve thirteen fourteen

fifteen sixteen seventeen

eighteen nineteen twenty

thirty forty fifty

sixty seventy eighty

ninety

and so alphabetically the list begins:

eight

eighteen

eighty

eleven

fifteen

fifty....

And so on.