28912653788 has 12 divisors (see below), whose sum is σ = 50824038720. Its totient is φ = 14391499872.

The previous prime is 28912653779. The next prime is 28912653829. The reversal of 28912653788 is 88735621982.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 16205753 + ... + 16207536.

It is an arithmetic number, because the mean of its divisors is an integer number (4235336560).

Almost surely, 2^28912653788 is an apocalyptic number.

It is an amenable number.

28912653788 is a deficient number, since it is larger than the sum of its proper divisors (21911384932).

28912653788 is a wasteful number, since it uses less digits than its factorization.

28912653788 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32413516 (or 32413514 counting only the distinct ones).

The product of its digits is 11612160, while the sum is 59.

The spelling of 28912653788 in words is "twenty-eight billion, nine hundred twelve million, six hundred fifty-three thousand, seven hundred eighty-eight".