28365586100 has 18 divisors (see below), whose sum is σ = 61553322054. Its totient is φ = 11346234400.

The previous prime is 28365586037. The next prime is 28365586121. The reversal of 28365586100 is 168556382.

It can be written as a sum of positive squares in 3 ways, for example, as 51466276 + 28314119824 = 7174^2 + 168268^2 .

It is a congruent number.

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, 141827831 + ... + 141828030.

It is an arithmetic number, because the mean of its divisors is an integer number (3419629003).

Almost surely, 2^28365586100 is an apocalyptic number.

28365586100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28365586100 is an abundant number, since it is smaller than the sum of its proper divisors (33187735954).

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

28365586100 is a wasteful number, since it uses less digits than its factorization.

28365586100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 283655875 (or 283655868 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 44.

The spelling of 28365586100 in words is "twenty-eight billion, three hundred sixty-five million, five hundred eighty-six thousand, one hundred".