205823028 has 48 divisors (see below), whose sum is σ = 490218624. Its totient is φ = 67194240.

The previous prime is 205823017. The next prime is 205823077. The reversal of 205823028 is 820328502.

It is a junction number, because it is equal to n+sod(n) for n = 205822986 and 205823004.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 231601 + ... + 232487.

It is an arithmetic number, because the mean of its divisors is an integer number (10212888).

Almost surely, 2^205823028 is an apocalyptic number.

It is an amenable number.

205823028 is an abundant number, since it is smaller than the sum of its proper divisors (284395596).

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

205823028 is a wasteful number, since it uses less digits than its factorization.

205823028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1272 (or 1270 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 30.

The square root of 205823028 is about 14346.5336579956. The cubic root of 205823028 is about 590.4248859414.

The spelling of 205823028 in words is "two hundred five million, eight hundred twenty-three thousand, twenty-eight".