28940093888 has 56 divisors (see below), whose sum is σ = 62902947600. Its totient is φ = 13149237248.

The previous prime is 28940093887. The next prime is 28940093893. The reversal of 28940093888 is 88839004982.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28940093881) 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 7 ways as a sum of consecutive naturals, for example, 427058 + ... + 490161.

Almost surely, 2^28940093888 is an apocalyptic number.

It is an amenable number.

28940093888 is an abundant number, since it is smaller than the sum of its proper divisors (33962853712).

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

28940093888 is a wasteful number, since it uses less digits than its factorization.

28940093888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 917277 (or 917267 counting only the distinct ones).

The product of its (nonzero) digits is 7962624, while the sum is 59.

The spelling of 28940093888 in words is "twenty-eight billion, nine hundred forty million, ninety-three thousand, eight hundred eighty-eight".