205223404 has 6 divisors (see below), whose sum is σ = 359140964. Its totient is φ = 102611700.

The previous prime is 205223377. The next prime is 205223407. The reversal of 205223404 is 404322502.

It is not an unprimeable number, because it can be changed into a prime (205223407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25652922 + ... + 25652929.

Almost surely, 2^205223404 is an apocalyptic number.

It is an amenable number.

205223404 is a deficient number, since it is larger than the sum of its proper divisors (153917560).

205223404 is a wasteful number, since it uses less digits than its factorization.

205223404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51305855 (or 51305853 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 22.

The square root of 205223404 is about 14325.6205450235. The cubic root of 205223404 is about 589.8509668582.

Adding to 205223404 its reverse (404322502), we get a palindrome (609545906).

The spelling of 205223404 in words is "two hundred five million, two hundred twenty-three thousand, four hundred four".