Yesterday, AstraZeneca paid out this March 2017 Dividend.

https://www.astrazeneca.com

The dividend was £1.502 a share

https://www.astrazeneca.com/investor-relations/dividend-policy.html

Now how much will that cost the company ?

As at 28 February 2017 the issued share capital of AstraZeneca PLC with voting rights is 1,265,386,327 ordinary shares of US$0.25.  No shares are held in Treasury.  Therefore, the total number of voting rights in AstraZeneca PLC is 1,265,386,327.

https://www.astrazeneca.com/investor-relations/Stock-exchange-announcements/transparency-directive-voting-rights-and-capital-01032017.html

Thus:

1,265,386,327  * £1.502 a share = £1,900,610,263

That is £1.9 Billion of cash

http://www.shareshop.hsbc.co.uk/shareshop/security.cgi?username=&ac=&csi=10009&record_search=1&search_phrase=az

That is a yield of 4.6%