| 72 (number) |
Article Index for 72 |
Information About72 (number) |
IN MATHEMATICS Seventy-two is the sum of four consecutive Primes (13 + 17 + 19 + 23), as well as the sum of six consecutive primes (5 + 7 + 11 + 13 + 17 + 19). 72 is a Harshad Number and a Pronic Number . In normal space, the exterior angles of an equilateral Pentagon measure 72 degrees each. There are 17 solutions to the equation φ (''x'') = 72, more than any integer below 72, making it a Highly Totient Number . IN SCIENCE
In Astronomy , : Messier Object M72 , a Magnitude 10.0 Globular Cluster in the Constellation Aquarius : The , a magnitude 13.5 Barred Spiral Galaxy in the constellation Andromeda :The series which began on -727 August 16 and ended on 752 January 21 . The duration of Saros series 72 was 1478.1 years, and it contained 83 solar eclipses. :The Saros number of the Lunar Eclipse series which began on -407 June 5 and ended on 891 July 25 . The duration of Saros series 72 was 1298.1 years, and it contained 73 lunar eclipses. IN OTHER FIELDS Seventy-two is also:
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