204030728 has 64 divisors (see below), whose sum is σ = 432069120. Its totient is φ = 89510400.

The previous prime is 204030709. The next prime is 204030731. The reversal of 204030728 is 827030402.

It is a junction number, because it is equal to n+sod(n) for n = 204030697 and 204030706.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 725948 + ... + 726228.

It is an arithmetic number, because the mean of its divisors is an integer number (6751080).

Almost surely, 2^204030728 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 204030728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (216034560).

204030728 is an abundant number, since it is smaller than the sum of its proper divisors (228038392).

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

204030728 is a wasteful number, since it uses less digits than its factorization.

204030728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 558 (or 554 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 26.

The square root of 204030728 is about 14283.9325117420. The cubic root of 204030728 is about 588.7060871529.

It can be divided in two parts, 2040 and 30728, that added together give a 15-th power (32768 = 2¹⁵).

The spelling of 204030728 in words is "two hundred four million, thirty thousand, seven hundred twenty-eight".