28564644646582 has 32 divisors (see below), whose sum is σ = 46794238493184. Its totient is φ = 12969463449600.

The previous prime is 28564644646579. The next prime is 28564644646709.

28564644646582 is nontrivially palindromic in base 10.

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, 138505782 + ... + 138711862.

It is an arithmetic number, because the mean of its divisors is an integer number (1462319952912).

Almost surely, 2^{28564644646582} is an apocalyptic number.

28564644646582 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

28564644646582 is a deficient number, since it is larger than the sum of its proper divisors (18229593846602).

28564644646582 is a wasteful number, since it uses less digits than its factorization.

28564644646582 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213084.

The product of its digits is 2123366400, while the sum is 70.

The spelling of 28564644646582 in words is "twenty-eight trillion, five hundred sixty-four billion, six hundred forty-four million, six hundred forty-six thousand, five hundred eighty-two".