205865052 has 12 divisors (see below), whose sum is σ = 480351816. Its totient is φ = 68621680.

The previous prime is 205865039. The next prime is 205865063. The reversal of 205865052 is 250568502.

It is a tau number, because it is divible by the number of its divisors (12).

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors.

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, 8577699 + ... + 8577722.

It is an arithmetic number, because the mean of its divisors is an integer number (40029318).

Almost surely, 2^205865052 is an apocalyptic number.

It is an amenable number.

205865052 is an abundant number, since it is smaller than the sum of its proper divisors (274486764).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

205865052 is a wasteful number, since it uses less digits than its factorization.

205865052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17155428 (or 17155426 counting only the distinct ones).

The product of its (nonzero) digits is 24000, while the sum is 33.

The square root of 205865052 is about 14347.9981879006. The cubic root of 205865052 is about 590.4650666202.

The spelling of 205865052 in words is "two hundred five million, eight hundred sixty-five thousand, fifty-two".