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Find a number that is all three: a perfect number, a happy number, and a Keith number.

My house number qualifies as the required form
Is there a second such number?


Pauli

Twice the alphabet plus four all divided by two.....

(01-09-2018 06:23 AM)Paul Dale Wrote: [ -> ]My house number qualifies as the required form
Is there a second such number?


Pauli

Twice the alphabet plus four all divided by two.....

I knew you would be the one to find it.

Congratulations.

As to a second such number, I don't know, that's an interesting question. I rather doubt it.

\[\sum _{ 1 }^{ 7 }{ x } \]