27 (number)
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27 was a number.
At one point during their failure, a Kroton calculated they would have to reserve power for 27 further minutes before it exhausted. (TV: The Krotons)
Vega 3 was 27 light-years from Earth. (PROSE: K9 and the Beasts of Vega)
Through use of a magnetron, the New Dalek Empire transported 27 stolen planets from across time and space to the Medusa Cascade, where they collectively served as an engine for the Daleks' reality bomb. (TV: The Stolen Earth/Journey's End)