28813554488 has 8 divisors (see below), whose sum is σ = 54025414680. Its totient is φ = 14406777240.

The previous prime is 28813554457. The next prime is 28813554491. The reversal of 28813554488 is 88445531882.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1800847148 + ... + 1800847163.

It is an arithmetic number, because the mean of its divisors is an integer number (6753176835).

Almost surely, 2^28813554488 is an apocalyptic number.

It is an amenable number.

28813554488 is a deficient number, since it is larger than the sum of its proper divisors (25211860192).

28813554488 is a wasteful number, since it uses less digits than its factorization.

28813554488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3601694317 (or 3601694313 counting only the distinct ones).

The product of its digits is 9830400, while the sum is 56.

The spelling of 28813554488 in words is "twenty-eight billion, eight hundred thirteen million, five hundred fifty-four thousand, four hundred eighty-eight".