28195968600 has 144 divisors (see below), whose sum is σ = 96893854200. Its totient is φ = 7344046080.

The previous prime is 28195968569. The next prime is 28195968601. The reversal of 28195968600 is 686959182.

It is a happy number.

28195968600 is a `hidden beast` number, since 28 + 1 + 9 + 5 + 9 + 6 + 8 + 600 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28195968601) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 104745 + ... + 259544.

Almost surely, 2^28195968600 is an apocalyptic number.

28195968600 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28195968600 is an abundant number, since it is smaller than the sum of its proper divisors (68697885600).

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

28195968600 is a wasteful number, since it uses less digits than its factorization.

28195968600 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 364354 (or 364342 counting only the distinct ones).

The product of its (nonzero) digits is 1866240, while the sum is 54.

The spelling of 28195968600 in words is "twenty-eight billion, one hundred ninety-five million, nine hundred sixty-eight thousand, six hundred".