99128922 has 32 divisors (see below), whose sum is σ = 205369344. Its totient is φ = 31878000.

The previous prime is 99128899. The next prime is 99128923. The reversal of 99128922 is 22982199.

It is a happy 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 15 ways as a sum of consecutive naturals, for example, 17547 + ... + 22497.

It is an arithmetic number, because the mean of its divisors is an integer number (6417792).

Almost surely, 2^99128922 is an apocalyptic number.

99128922 is an abundant number, since it is smaller than the sum of its proper divisors (106240422).

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

99128922 is a wasteful number, since it uses less digits than its factorization.

99128922 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5074.

The product of its digits is 46656, while the sum is 42.

The square root of 99128922 is about 9956.3508375308. The cubic root of 99128922 is about 462.8072224179.

The spelling of 99128922 in words is "ninety-nine million, one hundred twenty-eight thousand, nine hundred twenty-two".