30368728236 has 144 divisors (see below), whose sum is σ = 91008005760. Its totient is φ = 7792807680.

The previous prime is 30368728219. The next prime is 30368728259. The reversal of 30368728236 is 63282786303.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 508560 + ... + 565128.

It is an arithmetic number, because the mean of its divisors is an integer number (632000040).

Almost surely, 2^30368728236 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 30368728236, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45504002880).

30368728236 is an abundant number, since it is smaller than the sum of its proper divisors (60639277524).

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

30368728236 is a wasteful number, since it uses less digits than its factorization.

30368728236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56684 (or 56675 counting only the distinct ones).

The product of its (nonzero) digits is 1741824, while the sum is 48.

The spelling of 30368728236 in words is "thirty billion, three hundred sixty-eight million, seven hundred twenty-eight thousand, two hundred thirty-six".