This paper brings representations of 1729, a famous **Hardy-Ramanujan number** in different situations. These representations are of **crazy-type, single digit, single letter, Selfie-type, running expressions, selfie fractions, equivalent fractions, Triangular, Fibonacci, fixed digits repetitions prime numbers patterns , Pythagorean triples, palindromic-type, polygonal-type, prime numbers, embedded, repeated, etc. **Ideas toward **magic squares** are also extended. Some quotes and historical notes on Ramanujan’s life are also specified. It is revised and extended version of author’s **previos work.**

Below is a link for download the work:

- Inder J. Taneja, Hardy-Ramanujan Number – 1729,
**Zenodo**, December 22, 2021, pp. 1-106,**https://doi.org/10.5281/zenodo.5799640** **Pdf file for download**

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