30894427128 has 16 divisors (see below), whose sum is σ = 77236067880. Its totient is φ = 10298142368.

The previous prime is 30894427111. The next prime is 30894427147. The reversal of 30894427128 is 82172449803.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 643633875 + ... + 643633922.

Almost surely, 2^30894427128 is an apocalyptic number.

It is an amenable number.

30894427128 is an abundant number, since it is smaller than the sum of its proper divisors (46341640752).

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

30894427128 is a wasteful number, since it uses less digits than its factorization.

30894427128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1287267806 (or 1287267802 counting only the distinct ones).

The product of its (nonzero) digits is 774144, while the sum is 48.

The spelling of 30894427128 in words is "thirty billion, eight hundred ninety-four million, four hundred twenty-seven thousand, one hundred twenty-eight".