99239928 has 32 divisors (see below), whose sum is σ = 256104960. Its totient is φ = 32012640.

The previous prime is 99239911. The next prime is 99239939. The reversal of 99239928 is 82993299.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 65950 + ... + 67437.

It is an arithmetic number, because the mean of its divisors is an integer number (8003280).

Almost surely, 2^99239928 is an apocalyptic number.

It is an amenable number.

99239928 is an abundant number, since it is smaller than the sum of its proper divisors (156865032).

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

99239928 is a wasteful number, since it uses less digits than its factorization.

99239928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133427 (or 133423 counting only the distinct ones).

The product of its digits is 629856, while the sum is 51.

The square root of 99239928 is about 9961.9239105707. The cubic root of 99239928 is about 462.9799107138.

The spelling of 99239928 in words is "ninety-nine million, two hundred thirty-nine thousand, nine hundred twenty-eight".