205040694 has 32 divisors (see below), whose sum is σ = 418141440. Its totient is φ = 67009952.

The previous prime is 205040683. The next prime is 205040747. The reversal of 205040694 is 496040502.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 230719 + ... + 231605.

It is an arithmetic number, because the mean of its divisors is an integer number (13066920).

Almost surely, 2^205040694 is an apocalyptic number.

205040694 is an abundant number, since it is smaller than the sum of its proper divisors (213100746).

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

205040694 is a wasteful number, since it uses less digits than its factorization.

205040694 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1604.

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 205040694 is about 14319.2420888817. The cubic root of 205040694 is about 589.6758671590.

The spelling of 205040694 in words is "two hundred five million, forty thousand, six hundred ninety-four".