205404924 has 24 divisors (see below), whose sum is σ = 480372480. Its totient is φ = 68311984.

The previous prime is 205404923. The next prime is 205404929. The reversal of 205404924 is 429404502.

It is a junction number, because it is equal to n+sod(n) for n = 205404891 and 205404900.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205404923) 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 in 7 ways as a sum of consecutive naturals, for example, 14004 + ... + 24635.

It is an arithmetic number, because the mean of its divisors is an integer number (20015520).

Almost surely, 2^205404924 is an apocalyptic number.

It is an amenable number.

205404924 is an abundant number, since it is smaller than the sum of its proper divisors (274967556).

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

205404924 is a wasteful number, since it uses less digits than its factorization.

205404924 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39089 (or 39087 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 30.

The square root of 205404924 is about 14331.9546468721. The cubic root of 205404924 is about 590.0248232398.

The spelling of 205404924 in words is "two hundred five million, four hundred four thousand, nine hundred twenty-four".