Forgotten Number

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