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# 1729

This number is a composite.

Single Curio View: (Seek other curios for this number)

The largest number which is divisible by its prime sum of digits (19) and reversal (91)
happens to be Ramanujan's famous taxi-cab number
(1729 = 12^{3}+ 1

^{3}= 10

^{3}+ 9

^{3}). It is the smallest number expressible as the sum of two positive cubes in two different ways.

Submitted: 1999-09-02 18:40:00; Last Modified: 2008-01-30 11:28:00.

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