204500602728 has 48 divisors (see below), whose sum is σ = 554850262980. Its totient is φ = 68044472064.

The previous prime is 204500602727. The next prime is 204500602853. The reversal of 204500602728 is 827206005402.

204500602728 is a `hidden beast` number, since 2 + 0 + 45 + 0 + 0 + 602 + 7 + 2 + 8 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 146430206244 + 58070396484 = 382662^2 + 240978^2 .

It is a super-2 number, since 2×204500602728² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 204500602692 and 204500602701.

It is not an unprimeable number, because it can be changed into a prime (204500602727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2509525 + ... + 2589732.

Almost surely, 2^204500602728 is an apocalyptic number.

It is an amenable number.

204500602728 is an abundant number, since it is smaller than the sum of its proper divisors (350349660252).

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

204500602728 is a wasteful number, since it uses less digits than its factorization.

204500602728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5099826 (or 5099819 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 36.

The spelling of 204500602728 in words is "two hundred four billion, five hundred million, six hundred two thousand, seven hundred twenty-eight".