CREATE TABLE table_22904752_1 (_number VARCHAR2, us_viewers__million_ VARCHAR2)

What is the # when u.s. viewers (million) is 17.44?
SELECT COUNT(_number) FROM table_22904752_1 WHERE us_viewers__million_ = "17.44"
SELECT COUNT("_number") FROM "table_22904752_1" WHERE "17.44" = "us_viewers__million_"