99128826 has 32 divisors (see below), whose sum is σ = 220907520. Its totient is φ = 32949792.

The previous prime is 99128807. The next prime is 99128839. The reversal of 99128826 is 62882199.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18286 + ... + 23078.

It is an arithmetic number, because the mean of its divisors is an integer number (6903360).

Almost surely, 2^99128826 is an apocalyptic number.

99128826 is an abundant number, since it is smaller than the sum of its proper divisors (121778694).

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

99128826 is a wasteful number, since it uses less digits than its factorization.

99128826 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5187 (or 5181 counting only the distinct ones).

The product of its digits is 124416, while the sum is 45.

The square root of 99128826 is about 9956.3460164862. The cubic root of 99128826 is about 462.8070730181.

The spelling of 99128826 in words is "ninety-nine million, one hundred twenty-eight thousand, eight hundred twenty-six".