30728935591728 has 40 divisors (see below), whose sum is σ = 86599727578176. Its totient is φ = 9311798664000.

The previous prime is 30728935591721. The next prime is 30728935591729. The reversal of 30728935591728 is 82719553982703.

It is not an unprimeable number, because it can be changed into a prime (30728935591721) 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 7 ways as a sum of consecutive naturals, for example, 29099370298 + ... + 29099371353.

Almost surely, 2^{30728935591728} is an apocalyptic number.

It is an amenable number.

30728935591728 is an abundant number, since it is smaller than the sum of its proper divisors (55870791986448).

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

30728935591728 is a wasteful number, since it uses less digits than its factorization.

30728935591728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58198741673 (or 58198741667 counting only the distinct ones).

The product of its (nonzero) digits is 228614400, while the sum is 69.

The spelling of 30728935591728 in words is "thirty trillion, seven hundred twenty-eight billion, nine hundred thirty-five million, five hundred ninety-one thousand, seven hundred twenty-eight".