28783838288 has 20 divisors (see below), whose sum is σ = 55821882900. Its totient is φ = 14378191104.

The previous prime is 28783838273. The next prime is 28783838341. The reversal of 28783838288 is 88283838782.

It can be written as a sum of positive squares in 2 ways, for example, as 26553354304 + 2230483984 = 162952^2 + 47228^2 .

It is a congruent number.

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, 840695 + ... + 874262.

It is an arithmetic number, because the mean of its divisors is an integer number (2791094145).

Almost surely, 2^28783838288 is an apocalyptic number.

It is an amenable number.

28783838288 is a deficient number, since it is larger than the sum of its proper divisors (27038044612).

28783838288 is a wasteful number, since it uses less digits than its factorization.

28783838288 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1716014 (or 1716008 counting only the distinct ones).

The product of its digits is 66060288, while the sum is 65.

The spelling of 28783838288 in words is "twenty-eight billion, seven hundred eighty-three million, eight hundred thirty-eight thousand, two hundred eighty-eight".