204612728 has 8 divisors (see below), whose sum is σ = 383648880. Its totient is φ = 102306360.

The previous prime is 204612721. The next prime is 204612739. The reversal of 204612728 is 827216402.

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 204612694 and 204612703.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204612721) by changing a digit.

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 as a sum of consecutive naturals, namely, 12788288 + ... + 12788303.

It is an arithmetic number, because the mean of its divisors is an integer number (47956110).

Almost surely, 2^204612728 is an apocalyptic number.

It is an amenable number.

204612728 is a deficient number, since it is larger than the sum of its proper divisors (179036152).

204612728 is a wasteful number, since it uses less digits than its factorization.

204612728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25576597 (or 25576593 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 32.

The square root of 204612728 is about 14304.2905451476. The cubic root of 204612728 is about 589.2653193806.

The spelling of 204612728 in words is "two hundred four million, six hundred twelve thousand, seven hundred twenty-eight".