28054906188 has 24 divisors (see below), whose sum is σ = 65499269808. Its totient is φ = 9346232256.

The previous prime is 28054906177. The next prime is 28054906193. The reversal of 28054906188 is 88160945082.

It is a super-2 number, since 2×28054906188² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 28054906188.

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, 653731 + ... + 695322.

It is an arithmetic number, because the mean of its divisors is an integer number (2729136242).

Almost surely, 2^28054906188 is an apocalyptic number.

It is an amenable number.

28054906188 is an abundant number, since it is smaller than the sum of its proper divisors (37444363620).

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

28054906188 is a wasteful number, since it uses less digits than its factorization.

28054906188 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1350793 (or 1350791 counting only the distinct ones).

The product of its (nonzero) digits is 1105920, while the sum is 51.

The spelling of 28054906188 in words is "twenty-eight billion, fifty-four million, nine hundred six thousand, one hundred eighty-eight".