Seventy eight

The seventy-eight (78) is the natural number that follows seventy-seven and precedes seventy-nine.

Mathematical properties

• It is a composite number, which has the following factors: 1, 2, 3, 6, 13, 26, 39. As the sum of its factors is 90 /2005 78, it is an abundant number.
• Triangular number.
• Sphenic number.

Features

• 78 is the atomic number of platinum.