30128102838 has 12 divisors (see below), whose sum is σ = 65277556188. Its totient is φ = 10042700940.

The previous prime is 30128102833. The next prime is 30128102869. The reversal of 30128102838 is 83820182103.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30128102833) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 836891728 + ... + 836891763.

It is an arithmetic number, because the mean of its divisors is an integer number (5439796349).

Almost surely, 2^30128102838 is an apocalyptic number.

30128102838 is an abundant number, since it is smaller than the sum of its proper divisors (35149453350).

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

30128102838 is a wasteful number, since it uses less digits than its factorization.

30128102838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1673783499 (or 1673783496 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 36.

The spelling of 30128102838 in words is "thirty billion, one hundred twenty-eight million, one hundred two thousand, eight hundred thirty-eight".