28308682028 has 24 divisors (see below), whose sum is σ = 55063547280. Its totient is φ = 12624797120.

The previous prime is 28308682009. The next prime is 28308682043. The reversal of 28308682028 is 82028680382.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6067283 + ... + 6071946.

It is an arithmetic number, because the mean of its divisors is an integer number (2294314470).

Almost surely, 2^28308682028 is an apocalyptic number.

It is an amenable number.

28308682028 is a deficient number, since it is larger than the sum of its proper divisors (26754865252).

28308682028 is a wasteful number, since it uses less digits than its factorization.

28308682028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12139297 (or 12139295 counting only the distinct ones).

The product of its (nonzero) digits is 589824, while the sum is 47.

The spelling of 28308682028 in words is "twenty-eight billion, three hundred eight million, six hundred eighty-two thousand, twenty-eight".