30323405988 has 144 divisors (see below), whose sum is σ = 86755608576. Its totient is φ = 8877496320.

The previous prime is 30323405969. The next prime is 30323405989. The reversal of 30323405988 is 88950432303.

30323405988 is a `hidden beast` number, since 30 + 3 + 23 + 4 + 0 + 598 + 8 = 666.

It is a super-2 number, since 2×30323405988² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (30323405989) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 550845 + ... + 603387.

It is an arithmetic number, because the mean of its divisors is an integer number (602469504).

Almost surely, 2^30323405988 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 30323405988, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43377804288).

30323405988 is an abundant number, since it is smaller than the sum of its proper divisors (56432202588).

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

30323405988 is a wasteful number, since it uses less digits than its factorization.

30323405988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52634 (or 52629 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 45.

The spelling of 30323405988 in words is "thirty billion, three hundred twenty-three million, four hundred five thousand, nine hundred eighty-eight".