What is the episode number of the episode whose production code is 226407?
CREATE TABLE "table1_27714985_1" (
  "no_s_in_series" real,
  "no_s_in_season" real,
  "title" text,
  "directed_by" text,
  "written_by" text,
  "original_air_date" text,
  "production_code_s" real,
  "u_s_viewers_millions" text
);
SELECT MIN("no_s_in_season") FROM "table1_27714985_1" WHERE "production_code_s"=226407;