28163937300 has 72 divisors (see below), whose sum is σ = 83475198912. Its totient is φ = 7327200000.

The previous prime is 28163937227. The next prime is 28163937311. The reversal of 28163937300 is 373936182.

It is a happy number.

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, 1132576 + ... + 1157175.

Almost surely, 2^28163937300 is an apocalyptic number.

28163937300 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28163937300 is an abundant number, since it is smaller than the sum of its proper divisors (55311261612).

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

28163937300 is a wasteful number, since it uses less digits than its factorization.

28163937300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2289809 (or 2289802 counting only the distinct ones).

The product of its (nonzero) digits is 163296, while the sum is 42.

The spelling of 28163937300 in words is "twenty-eight billion, one hundred sixty-three million, nine hundred thirty-seven thousand, three hundred".