30804215892 has 48 divisors (see below), whose sum is σ = 72673874112. Its totient is φ = 10154327040.

The previous prime is 30804215891. The next prime is 30804215909. The reversal of 30804215892 is 29851240803.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30804215891) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1597903 + ... + 1617065.

It is an arithmetic number, because the mean of its divisors is an integer number (1514039044).

Almost surely, 2^30804215892 is an apocalyptic number.

It is an amenable number.

30804215892 is an abundant number, since it is smaller than the sum of its proper divisors (41869658220).

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

30804215892 is a wasteful number, since it uses less digits than its factorization.

30804215892 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20648 (or 20646 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 42.

The spelling of 30804215892 in words is "thirty billion, eight hundred four million, two hundred fifteen thousand, eight hundred ninety-two".