28803888648 has 24 divisors (see below), whose sum is σ = 78010531950. Its totient is φ = 9601296192.

The previous prime is 28803888601. The next prime is 28803888653. The reversal of 28803888648 is 84688830882.

It can be written as a sum of positive squares in only one way, i.e., 23377798404 + 5426090244 = 152898^2 + 73662^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 200026933 + ... + 200027076.

Almost surely, 2^28803888648 is an apocalyptic number.

It is an amenable number.

28803888648 is an abundant number, since it is smaller than the sum of its proper divisors (49206643302).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28803888648 is a wasteful number, since it uses less digits than its factorization.

28803888648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 400054021 (or 400054014 counting only the distinct ones).

The product of its (nonzero) digits is 37748736, while the sum is 63.

The spelling of 28803888648 in words is "twenty-eight billion, eight hundred three million, eight hundred eighty-eight thousand, six hundred forty-eight".