Happy birthday, J.K. Rowling and Harry Potter! The author of the beloved fantasy novel series turns 48 on July 31; the exact age of her most famous creation (who not so coincidentally shares her birthdate) is unknown.
To mark this special day, we’ve put together this list of Harry Potter-themed numbers:
910 million
Amount, in dollars, of J.K. Rowling’s net worth
15 billion
Estimated value, in dollars, of the Harry Potter brand
6
Number of years J.K. Rowling spent writing the manuscript that would become Harry Potter and the Philosopher’s Stone
12
Number of publishers to which J.K. Rowling’s agency sent her 200-page partial manuscript of the book
1
Number of publishers that expressed interest in purchasing the rights to the book
0
Number of publishers that made an offer
2,400
Amount, in dollars, of the advance paid to J.K. Rowling by London-based publisher Bloomsbury one year later
8
Age, in years, of the girl whose father, the chairman of Bloomsbury, made her read the first chapter of the manuscript. (She loved it and demanded more. )
500
Number of copies in the initial Bloomsbury print run of Harry Potter and the Philosopher’s Stone
350
Number of copies from that initial print run distributed to libraries
40,000
Value, in dollars, of a Bloomsbury first-edition of Harry Potter and the Philosopher’s Stone
11 million
Number of copies the final installment in the series, Harry Potter and the Deathly Hallows, sold on its first day of release in the U.S. and U.K.
450 million
Number of Harry Potter books in print, worldwide
73
Number of foreign-language translations of Harry Potter books
1.15 billion
Amount, in dollars, of the total budget of all eight Harry Potter movies
7.7 billion
Amount, in dollars, of combined worldwide grosses of the Harry Potter movies
1, 2, 5, 4, 6, and 4
Number, respectively, of producers (1), screenwriters (2), editors (5), composers (4), cinematographers (6), and directors (4) who worked on the eight Harry Potter movies
19.6
Total running time, in hours, of all eight Harry Potter movies
160
Number of prop eyeglasses worn by Daniel Radcliffe throughout the eight films — most of which had no lenses in them, to avoid unwanted reflections
2
Number of prop eyeglasses Daniel Radcliffe kept from the movies — from the first and last installments
60-70
Number of prop wands used by Daniel Radcliffe throughout the eight films
1
Number of ice-cream trucks purchased by the members of the Harry Potter cast — bought by Rupert Grint to fulfill a childhood dream