Question

what is hardy ramanujan number and what is special in it

Answer 1

1729 is known as hardy ramanujan number
it's because it's the smallest square which can be represented as sum of two cubes in two ways.
Hope it helps

Answer 2

Heya!!!

Here's your answer friend,

1729 is the Hardy - Ramanujan number, the smallest positive number (integer) that is sum of 2 cubes in two different ways.

Speciality in it : It's very interesting number because it is the only smallest number that could be expressed in sum of 2 cubes in two different ways.

Hope it helps you : )