CREATE TABLE table_26409328_1 (production_code VARCHAR, us_viewers__millions_ VARCHAR)

what is the production code of the episode viewed by 5.36 million u.s. people?
SELECT production_code FROM table_26409328_1 WHERE us_viewers__millions_ = "5.36"
SELECT "production_code" FROM "table_26409328_1" WHERE "5.36" = "us_viewers__millions_"