205140868 has 24 divisors (see below), whose sum is σ = 369520704. Its totient is φ = 99607200.

The previous prime is 205140847. The next prime is 205140883. The reversal of 205140868 is 868041502.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13638 + ... + 24418.

It is an arithmetic number, because the mean of its divisors is an integer number (15396696).

Almost surely, 2^205140868 is an apocalyptic number.

It is an amenable number.

205140868 is a deficient number, since it is larger than the sum of its proper divisors (164379836).

205140868 is a wasteful number, since it uses less digits than its factorization.

205140868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10923 (or 10921 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 34.

The square root of 205140868 is about 14322.7395424199. The cubic root of 205140868 is about 589.7718815518.

The spelling of 205140868 in words is "two hundred five million, one hundred forty thousand, eight hundred sixty-eight".