205040433 has 12 divisors (see below), whose sum is σ = 296035440. Its totient is φ = 126178416.

The previous prime is 205040413. The next prime is 205040447. The reversal of 205040433 is 334040502.

It is a happy number.

It is not a de Polignac number, because 205040433 - 2⁶ = 205040369 is a prime.

It is not an unprimeable number, because it can be changed into a prime (205040413) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 201703 + ... + 202716.

It is an arithmetic number, because the mean of its divisors is an integer number (24669620).

Almost surely, 2^205040433 is an apocalyptic number.

It is an amenable number.

205040433 is a deficient number, since it is larger than the sum of its proper divisors (90995007).

205040433 is a wasteful number, since it uses less digits than its factorization.

205040433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 404448 (or 404435 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 21.

The square root of 205040433 is about 14319.2329752679. The cubic root of 205040433 is about 589.6756169559.

Adding to 205040433 its reverse (334040502), we get a palindrome (539080935).

The spelling of 205040433 in words is "two hundred five million, forty thousand, four hundred thirty-three".