28093186864 has 20 divisors (see below), whose sum is σ = 54607857304. Its totient is φ = 14000836608.

The previous prime is 28093186841. The next prime is 28093186871. The reversal of 28093186864 is 46868139082.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2854737 + ... + 2864560.

Almost surely, 2^28093186864 is an apocalyptic number.

It is an amenable number.

28093186864 is a deficient number, since it is larger than the sum of its proper divisors (26514670440).

28093186864 is a wasteful number, since it uses less digits than its factorization.

28093186864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5719612 (or 5719606 counting only the distinct ones).

The product of its (nonzero) digits is 3981312, while the sum is 55.

It can be divided in two parts, 2809318 and 6864, that added together give a palindrome (2816182).

The spelling of 28093186864 in words is "twenty-eight billion, ninety-three million, one hundred eighty-six thousand, eight hundred sixty-four".