Insert page number in google

Up at the top in your tool bar area, click Insert > Page number.
Choose where you want the page numbers:
Pick the first one: Top of page, to the right.
Type your last name in front of the page number and leave a space in between your last name and page #. 

To ensure that it does not cut off when you print, push it down a line by simply entering "enter" before your last name.