30628188840 has 32 divisors (see below), whose sum is σ = 91884566880. Its totient is φ = 8167516992.

The previous prime is 30628188797. The next prime is 30628188869. The reversal of 30628188840 is 4888182603.

It is a self number, because there is not a number n which added to its sum of digits gives 30628188840.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 127617334 + ... + 127617573.

It is an arithmetic number, because the mean of its divisors is an integer number (2871392715).

Almost surely, 2^30628188840 is an apocalyptic number.

30628188840 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

30628188840 is an abundant number, since it is smaller than the sum of its proper divisors (61256378040).

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

30628188840 is a wasteful number, since it uses less digits than its factorization.

30628188840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 255234921 (or 255234917 counting only the distinct ones).

The product of its (nonzero) digits is 589824, while the sum is 48.

The spelling of 30628188840 in words is "thirty billion, six hundred twenty-eight million, one hundred eighty-eight thousand, eight hundred forty".