28806664852686 has 32 divisors (see below), whose sum is σ = 65845336048128. Its totient is φ = 8230284338400.

The previous prime is 28806664852643. The next prime is 28806664852711. The reversal of 28806664852686 is 68625846660882.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6139090 + ... + 9762261.

It is an arithmetic number, because the mean of its divisors is an integer number (2057666751504).

Almost surely, 2^{28806664852686} is an apocalyptic number.

28806664852686 is an abundant number, since it is smaller than the sum of its proper divisors (37038671195442).

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

28806664852686 is a wasteful number, since it uses less digits than its factorization.

28806664852686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15944496.

The product of its (nonzero) digits is 2548039680, while the sum is 75.

The spelling of 28806664852686 in words is "twenty-eight trillion, eight hundred six billion, six hundred sixty-four million, eight hundred fifty-two thousand, six hundred eighty-six".