Thirty-six

The thirty-six (36) is the natural number that follows 35 and precedes 37.

Math

• It is a composite number, which has the following factors: 1, 2, 3, 4, 6, 9, 12 and 18. As the sum of its own factors is 55 /2005 36, it is an abundant number. The sum of its dividers 1, 2, 3, 4, 6, 9, 12, 18 and 36 = 91.
• Number two.
• It's the 6th square.
• Triangular number, after 28 and before 45.
• 8.o semi-perfect number.
• Erdős-Woods number.
• It's a triangular square number.

triangular square number

• A Ulam number.
• Highly composite number.
• Harshad number.
• Refactorable number.
• The problem of the thirty-six officers is a mathematical puzzle.
• This number is the sum of a pair of twin cousins (17 + 19).
• The truncated cube and the truncated octahedron are solids of Archimids with 36 edges.
• 36 is the number of degrees in the inner angle of each tip of a regular staff.
• A practical number.
• Størmer number.

Science

• 36 is the atomic number of krypton (Kr)
• Messier M36 is an open cluster in the constellation of Auriga.
• Object of the New General Catalog NGC 36 is an intermediate spiral galaxy located in the constellation of Pisces.
• (36) Atalante is an asteroid that forms part of the asteroid belt.