204529728 has 56 divisors (see below), whose sum is σ = 582785728. Its totient is φ = 62931456.

The previous prime is 204529697. The next prime is 204529729. The reversal of 204529728 is 827925402.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204529729) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38476 + ... + 43467.

It is an arithmetic number, because the mean of its divisors is an integer number (10406888).

Almost surely, 2^204529728 is an apocalyptic number.

It is an amenable number.

204529728 is an abundant number, since it is smaller than the sum of its proper divisors (378256000).

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

204529728 is a wasteful number, since it uses less digits than its factorization.

204529728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81971 (or 81961 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 39.

The square root of 204529728 is about 14301.3890234480. The cubic root of 204529728 is about 589.1856312192.

The spelling of 204529728 in words is "two hundred four million, five hundred twenty-nine thousand, seven hundred twenty-eight".