205450012 has 12 divisors (see below), whose sum is σ = 359940280. Its totient is φ = 102609936.

The previous prime is 205449997. The next prime is 205450031. The reversal of 205450012 is 210054502.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24687 + ... + 31942.

Almost surely, 2^205450012 is an apocalyptic number.

It is an amenable number.

205450012 is a deficient number, since it is larger than the sum of its proper divisors (154490268).

205450012 is a wasteful number, since it uses less digits than its factorization.

205450012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57540 (or 57538 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 19.

The square root of 205450012 is about 14333.5275490718. The cubic root of 205450012 is about 590.0679917813.

The spelling of 205450012 in words is "two hundred five million, four hundred fifty thousand, twelve".