28163703900 has 72 divisors (see below), whose sum is σ = 81558779904. Its totient is φ = 7503704000.

The previous prime is 28163703889. The next prime is 28163703917. The reversal of 28163703900 is 930736182.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 304519 + ... + 386081.

It is an arithmetic number, because the mean of its divisors is an integer number (1132760832).

Almost surely, 2^28163703900 is an apocalyptic number.

28163703900 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28163703900 is an abundant number, since it is smaller than the sum of its proper divisors (53395076004).

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

28163703900 is a wasteful number, since it uses less digits than its factorization.

28163703900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82731 (or 82724 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 39.

The spelling of 28163703900 in words is "twenty-eight billion, one hundred sixty-three million, seven hundred three thousand, nine hundred".