Number Gossip

(Enter a number and I'll tell you everything you wanted to know about it but were afraid to ask.)

Unique Properties of 990

  • 990 is the smallest triangular number that can be represented as a sum of two distinct triangular numbers, and as a product of two triangular numbers greater than 1
  • 990 is the smallest triangular number such that each decimal digit of n is equal to the difference of two other digits of n

Common Properties of 990

Abundant
Composite
Even
Evil
Practical
Triangular