Question: Name the number of tn seshan values for kr values is 478608
Schema: create table table_22897453_1 (tn_seshan__values_ varchar, kr_narayanan__values_ varchar, PRIMARY KEY (tn_seshan__values_))
SQL: select count(tn_seshan__values_) from table_22897453_1 where kr_narayanan__values_ = 478608