28395685794 has 32 divisors (see below), whose sum is σ = 64910837376. Its totient is φ = 8112251520.

The previous prime is 28395685793. The next prime is 28395685861. The reversal of 28395685794 is 49758659382.

It is not an unprimeable number, because it can be changed into a prime (28395685793) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 495174 + ... + 549534.

It is an arithmetic number, because the mean of its divisors is an integer number (2028463668).

Almost surely, 2^28395685794 is an apocalyptic number.

28395685794 is an abundant number, since it is smaller than the sum of its proper divisors (36515151582).

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

28395685794 is a wasteful number, since it uses less digits than its factorization.

28395685794 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66810.

The product of its digits is 130636800, while the sum is 66.

The spelling of 28395685794 in words is "twenty-eight billion, three hundred ninety-five million, six hundred eighty-five thousand, seven hundred ninety-four".