30785028828 has 48 divisors (see below), whose sum is σ = 72177799680. Its totient is φ = 10212294400.

The previous prime is 30785028823. The next prime is 30785028847. The reversal of 30785028828 is 82882058703.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30785028823) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7256788 + ... + 7261028.

It is an arithmetic number, because the mean of its divisors is an integer number (1503704160).

Almost surely, 2^30785028828 is an apocalyptic number.

It is an amenable number.

30785028828 is an abundant number, since it is smaller than the sum of its proper divisors (41392770852).

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

30785028828 is a wasteful number, since it uses less digits than its factorization.

30785028828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7018 (or 7016 counting only the distinct ones).

The product of its (nonzero) digits is 1720320, while the sum is 51.

The spelling of 30785028828 in words is "thirty billion, seven hundred eighty-five million, twenty-eight thousand, eight hundred twenty-eight".