28528546686 has 16 divisors (see below), whose sum is σ = 57174259584. Its totient is φ = 9489987864.

The previous prime is 28528546667. The next prime is 28528546693. The reversal of 28528546686 is 68664582582.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4878760 + ... + 4884603.

It is an arithmetic number, because the mean of its divisors is an integer number (3573391224).

Almost surely, 2^28528546686 is an apocalyptic number.

28528546686 is an abundant number, since it is smaller than the sum of its proper divisors (28645712898).

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

28528546686 is a wasteful number, since it uses less digits than its factorization.

28528546686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9763855.

The product of its digits is 44236800, while the sum is 60.

The spelling of 28528546686 in words is "twenty-eight billion, five hundred twenty-eight million, five hundred forty-six thousand, six hundred eighty-six".