Create Number Table in SQL Server

This is the amazing Number table which is very effective in solving challenging problems in SQL Server.
I will use this in my series to build the base tables, so here is the code below:

Create table  Numbers (N Int Primary Key Clustered)


insert into Numbers
SELECT 
TOP 500000 Convert ( Varchar (50) , Row_Number () Over (Order By S1.number ) )

FROM master.dbo.spt_values s1
CROSS JOIN master.dbo.spt_values s2