28028005000028 has 24 divisors (see below), whose sum is σ = 53565607050480. Its totient is φ = 12726288581120.

The previous prime is 28028004999997. The next prime is 28028005000033. The reversal of 28028005000028 is 82000050082082.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 342800951 + ... + 342882702.

It is an arithmetic number, because the mean of its divisors is an integer number (2231900293770).

Almost surely, 2^{28028005000028} is an apocalyptic number.

It is an amenable number.

28028005000028 is a deficient number, since it is larger than the sum of its proper divisors (25537602050452).

28028005000028 is a wasteful number, since it uses less digits than its factorization.

28028005000028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 685684597 (or 685684595 counting only the distinct ones).

The product of its (nonzero) digits is 20480, while the sum is 35.

The spelling of 28028005000028 in words is "twenty-eight trillion, twenty-eight billion, five million, twenty-eight", and thus it is an aban number and an uban number.