Oct 3 (Reuters) - The number of people registering as jobless in Spain rose 0.73% in September from a month earlier, or by 19,768, leaving a total of 2.72 million people out of work, data from the Labour Ministry showed on Tuesday.

Spain gained 12,921 net formal jobs in September, a separate report from the Social Security Ministry showed. The total number of people with a formal job stood at 20.74 million, it said. (Reporting by Joao Manuel Mauricio in Gdansk, editing by Inti Landauro)