28018048804 has 48 divisors (see below), whose sum is σ = 50738108400. Its totient is φ = 13529047040.

The previous prime is 28018048783. The next prime is 28018048819. The reversal of 28018048804 is 40884081082.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 22934073600 + 5083975204 = 151440^2 + 71302^2 .

It is a super-2 number, since 2×28018048804² (a number of 22 digits) contains 22 as substring.

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, 7744404 + ... + 7748020.

It is an arithmetic number, because the mean of its divisors is an integer number (1057043925).

Almost surely, 2^28018048804 is an apocalyptic number.

It is an amenable number.

28018048804 is a deficient number, since it is larger than the sum of its proper divisors (22720059596).

28018048804 is a wasteful number, since it uses less digits than its factorization.

28018048804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4128 (or 4126 counting only the distinct ones).

The product of its (nonzero) digits is 131072, while the sum is 43.

The spelling of 28018048804 in words is "twenty-eight billion, eighteen million, forty-eight thousand, eight hundred four".