28364072804 has 24 divisors (see below), whose sum is σ = 51857177400. Its totient is φ = 13557420800.

The previous prime is 28364072801. The next prime is 28364072827. The reversal of 28364072804 is 40827046382.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 3541440100 + 24822632704 = 59510^2 + 157552^2 .

It is a super-2 number, since 2×28364072804² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (28364072801) by changing a digit.

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, 1198769 + ... + 1222200.

It is an arithmetic number, because the mean of its divisors is an integer number (2160715725).

Almost surely, 2^28364072804 is an apocalyptic number.

It is an amenable number.

28364072804 is a deficient number, since it is larger than the sum of its proper divisors (23493104596).

28364072804 is a wasteful number, since it uses less digits than its factorization.

28364072804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2421103 (or 2421101 counting only the distinct ones).

The product of its (nonzero) digits is 516096, while the sum is 44.

The spelling of 28364072804 in words is "twenty-eight billion, three hundred sixty-four million, seventy-two thousand, eight hundred four".