Wednesday, September 5, 2012

406

406 = 2 x 7 x 29.

406 is the 28th triangular number. It is the sum of the first 28 positive integers.

406 is a centered nonagonal number.

406 is the number of ways to tile a 3 x 17 rectangle with 3 x 1 rectangles.

406 = 13 + 43 + 53 + 63 = 13 + 23 + 33 + 33 + 73.

406 is 626 in base 8 and 210 in base 14.


406 is the title of a poem by John Boyle O'Reilly.

Source: What's Special About This Number?

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