28364173864 has 64 divisors (see below), whose sum is σ = 60373555200. Its totient is φ = 12384596736.

The previous prime is 28364173853. The next prime is 28364173891. The reversal of 28364173864 is 46837146382.

It is a Harshad number since it is a multiple of its sum of digits (52).

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, 1438617 + ... + 1458199.

It is an arithmetic number, because the mean of its divisors is an integer number (943336800).

Almost surely, 2^28364173864 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28364173864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30186777600).

28364173864 is an abundant number, since it is smaller than the sum of its proper divisors (32009381336).

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

28364173864 is a wasteful number, since it uses less digits than its factorization.

28364173864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20354 (or 20350 counting only the distinct ones).

The product of its digits is 4644864, while the sum is 52.

The spelling of 28364173864 in words is "twenty-eight billion, three hundred sixty-four million, one hundred seventy-three thousand, eight hundred sixty-four".