28004688044 has 12 divisors (see below), whose sum is σ = 49020736800. Its totient is φ = 13998763248.

The previous prime is 28004688017. The next prime is 28004688077. The reversal of 28004688044 is 44088640082.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 28004687986 and 28004688004.

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, 877559 + ... + 908910.

It is an arithmetic number, because the mean of its divisors is an integer number (4085061400).

Almost surely, 2^28004688044 is an apocalyptic number.

It is an amenable number.

28004688044 is a deficient number, since it is larger than the sum of its proper divisors (21016048756).

28004688044 is a wasteful number, since it uses less digits than its factorization.

28004688044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1790392 (or 1790390 counting only the distinct ones).

The product of its (nonzero) digits is 393216, while the sum is 44.

The spelling of 28004688044 in words is "twenty-eight billion, four million, six hundred eighty-eight thousand, forty-four".