28444828064 has 24 divisors (see below), whose sum is σ = 56014227108. Its totient is φ = 14218992640.

The previous prime is 28444828033. The next prime is 28444828073. The reversal of 28444828064 is 46082844482.

It can be written as a sum of positive squares in 2 ways, for example, as 19516090000 + 8928738064 = 139700^2 + 94492^2 .

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 3 ways as a sum of consecutive naturals, for example, 30914 + ... + 240510.

Almost surely, 2^28444828064 is an apocalyptic number.

It is an amenable number.

28444828064 is a deficient number, since it is larger than the sum of its proper divisors (27569399044).

28444828064 is a wasteful number, since it uses less digits than its factorization.

28444828064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 213848 (or 213840 counting only the distinct ones).

The product of its (nonzero) digits is 3145728, while the sum is 50.

The spelling of 28444828064 in words is "twenty-eight billion, four hundred forty-four million, eight hundred twenty-eight thousand, sixty-four".