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 1890

  • 1890 is twice the smallest odd abundant number
  • 1890 is the smallest number n such that 1/φ(x) + 1/φ(y) = 1/φ(n), for some x + y = n

Common Properties of 1890

Abundant
Composite
Even
Evil
Practical