30081953728 has 56 divisors (see below), whose sum is σ = 60648486272. Its totient is φ = 14800921344.

The previous prime is 30081953723. The next prime is 30081953767. The reversal of 30081953728 is 82735918003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30081953723) 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 7 ways as a sum of consecutive naturals, for example, 4812301 + ... + 4818547.

Almost surely, 2^30081953728 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30081953728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30324243136).

30081953728 is an abundant number, since it is smaller than the sum of its proper divisors (30566532544).

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

30081953728 is a wasteful number, since it uses less digits than its factorization.

30081953728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7449 (or 7439 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 46.

The spelling of 30081953728 in words is "thirty billion, eighty-one million, nine hundred fifty-three thousand, seven hundred twenty-eight".