28793903900 has 36 divisors (see below), whose sum is σ = 62683748400. Its totient is φ = 11480515200.

The previous prime is 28793903881. The next prime is 28793903911. The reversal of 28793903900 is 930939782.

It is a Harshad number since it is a multiple of its sum of digits (50).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 431825 + ... + 494024.

Almost surely, 2^28793903900 is an apocalyptic number.

28793903900 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28793903900 is an abundant number, since it is smaller than the sum of its proper divisors (33889844500).

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

28793903900 is a wasteful number, since it uses less digits than its factorization.

28793903900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 926174 (or 926167 counting only the distinct ones).

The product of its (nonzero) digits is 734832, while the sum is 50.

The spelling of 28793903900 in words is "twenty-eight billion, seven hundred ninety-three million, nine hundred three thousand, nine hundred".