99785872 has 20 divisors (see below), whose sum is σ = 203511280. Its totient is φ = 47266848.

The previous prime is 99785867. The next prime is 99785911. The reversal of 99785872 is 27858799.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 163818 + ... + 164425.

It is an arithmetic number, because the mean of its divisors is an integer number (10175564).

Almost surely, 2^99785872 is an apocalyptic number.

It is an amenable number.

99785872 is an abundant number, since it is smaller than the sum of its proper divisors (103725408).

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

99785872 is a wasteful number, since it uses less digits than its factorization.

99785872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 328270 (or 328264 counting only the distinct ones).

The product of its digits is 2540160, while the sum is 55.

The square root of 99785872 is about 9989.2878625055. The cubic root of 99785872 is about 463.8273485677.

The spelling of 99785872 in words is "ninety-nine million, seven hundred eighty-five thousand, eight hundred seventy-two".