205440868 has 12 divisors (see below), whose sum is σ = 363081852. Its totient is φ = 101703200.

The previous prime is 205440857. The next prime is 205440877. The reversal of 205440868 is 868044502.

205440868 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 103673124 + 101767744 = 10182^2 + 10088^2 .

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, 253855 + ... + 254662.

It is an arithmetic number, because the mean of its divisors is an integer number (30256821).

Almost surely, 2^205440868 is an apocalyptic number.

It is an amenable number.

205440868 is a deficient number, since it is larger than the sum of its proper divisors (157640984).

205440868 is a wasteful number, since it uses less digits than its factorization.

205440868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 508622 (or 508620 counting only the distinct ones).

The product of its (nonzero) digits is 61440, while the sum is 37.

The square root of 205440868 is about 14333.2085731004. The cubic root of 205440868 is about 590.0592375646.

The spelling of 205440868 in words is "two hundred five million, four hundred forty thousand, eight hundred sixty-eight".