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## 'Forgotten Number' printed from http://nrich.maths.org/

I have forgotten the number of the combination of the lock on my
briefcase. I did have a method for remembering it...

It went as follows:

The number is equal to the sum of the cubes of its own
digits.

It is a three digit number less than 500

It is the sum of consecutive factorials.

It is a triangle number.