28004266804 has 24 divisors (see below), whose sum is σ = 52159144968. Its totient is φ = 13110190080.

The previous prime is 28004266783. The next prime is 28004266831. The reversal of 28004266804 is 40866240082.

It can be written as a sum of positive squares in 4 ways, for example, as 10275876900 + 17728389904 = 101370^2 + 133148^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1053787 + ... + 1080034.

It is an arithmetic number, because the mean of its divisors is an integer number (2173297707).

Almost surely, 2^28004266804 is an apocalyptic number.

It is an amenable number.

28004266804 is a deficient number, since it is larger than the sum of its proper divisors (24154878164).

28004266804 is a wasteful number, since it uses less digits than its factorization.

28004266804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2134035 (or 2134033 counting only the distinct ones).

The product of its (nonzero) digits is 147456, while the sum is 40.

The spelling of 28004266804 in words is "twenty-eight billion, four million, two hundred sixty-six thousand, eight hundred four".