Can someone help me out? The question asks, “What is unique about the number 8,549,176,320?” It MUST have something to do with the fact that each digit 0-9 is used once, but there are lots of numbers that do that. Any ideas? Thanks in advance…
Eight, five, four, nine, one, seven, six, three, two, zero.
FWIW, the factorization is
2^10 * 3^3 * 5 * 61843
Perhaps someone else will see something clever in that.
You could be annoying and point out how every number is unique (this is the first number after 8,549,176,319 for example), and in some sense none are, and…
Or, as jcgmoi was probably implying, the digits are in alphabetical order.
What is “odd” about the number: 8549176320? The digits
expressed as words are in alphabetical order.
I found this by searching google.
I found it at this site
Thanks, folks. That’s definitely it. I usually say “oh” instead of “zero,” so maybe that’s why it didn’t strike me.
Thanks again.
So the question should be, “what’s unique about this number in english?” Or in other words, what’s unique about 5289476310 ?
Cinque, Deux, Huit, Neuf, Quatre, Sept, Six, Trois, Un, Zero.
Now try 8319024567 
acht, daar, een, negen, nul, twee, vier, vijf, zes, zeven
5029846731 ?
Or for the truly ambitious, find the longest string of digits that is in alphabetical order in two or more languages, preferably unrelated ones.
Oops, I meant 529846731. A 0 on the front would just look silly.