30638328888 has 64 divisors (see below), whose sum is σ = 80116531200. Its totient is φ = 9745464960.

The previous prime is 30638328887. The next prime is 30638328893. The reversal of 30638328888 is 88882383603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30638328883) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 166473 + ... + 298311.

It is an arithmetic number, because the mean of its divisors is an integer number (1251820800).

Almost surely, 2^30638328888 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 30638328888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40058265600).

30638328888 is an abundant number, since it is smaller than the sum of its proper divisors (49478202312).

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

30638328888 is a wasteful number, since it uses less digits than its factorization.

30638328888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132292 (or 132288 counting only the distinct ones).

The product of its (nonzero) digits is 10616832, while the sum is 57.

The spelling of 30638328888 in words is "thirty billion, six hundred thirty-eight million, three hundred twenty-eight thousand, eight hundred eighty-eight".