Error Logs various questions

Question

I'm slowly collecting and trying to analyze lot of information on all of our instances (2008R2 SP1). I'm now going through the Error Logs and I've couple of question. There is a lot about error log size and found different recommendations on using sp_cycle_errorlog to recycle the logs on say, weekly basis, to avoid having very big error logs and be able to handle them adequately. So...

1. When an error log is considered to be "big"? Some of our logs take long to load, close to a million of rows. edit: one has 2 034 546 rows
2. I'm trying to find some tsql to get error log size, but can't find it, it is possible to do it?
3. I see the recommendation to recycle the logs and to configure more than just the default number of 6. Some authors recommend 50, others 10. I guess it depends on the environment, but is there a recommended number?