99128924 has 12 divisors (see below), whose sum is σ = 173546184. Its totient is φ = 49544304.

The previous prime is 99128923. The next prime is 99128927. The reversal of 99128924 is 42982199.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99128923) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14099 + ... + 19925.

It is an arithmetic number, because the mean of its divisors is an integer number (14462182).

Almost surely, 2^99128924 is an apocalyptic number.

It is an amenable number.

99128924 is a deficient number, since it is larger than the sum of its proper divisors (74417260).

99128924 is a wasteful number, since it uses less digits than its factorization.

99128924 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10084 (or 10082 counting only the distinct ones).

The product of its digits is 93312, while the sum is 44.

The square root of 99128924 is about 9956.3509379692. The cubic root of 99128924 is about 462.8072255304.

The spelling of 99128924 in words is "ninety-nine million, one hundred twenty-eight thousand, nine hundred twenty-four".