204372728 has 24 divisors (see below), whose sum is σ = 445762800. Its totient is φ = 87588144.

The previous prime is 204372661. The next prime is 204372731. The reversal of 204372728 is 827273402.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 260288 + ... + 261071.

It is an arithmetic number, because the mean of its divisors is an integer number (18573450).

Almost surely, 2^204372728 is an apocalyptic number.

204372728 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

204372728 is an abundant number, since it is smaller than the sum of its proper divisors (241390072).

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

204372728 is a wasteful number, since it uses less digits than its factorization.

204372728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 521379 (or 521368 counting only the distinct ones).

The product of its (nonzero) digits is 37632, while the sum is 35.

The square root of 204372728 is about 14295.8989923684. The cubic root of 204372728 is about 589.0348368029.

The spelling of 204372728 in words is "two hundred four million, three hundred seventy-two thousand, seven hundred twenty-eight".