99030128 has 80 divisors (see below), whose sum is σ = 214272000. Its totient is φ = 44142336.

The previous prime is 99030103. The next prime is 99030163. The reversal of 99030128 is 82103099.

It is a junction number, because it is equal to n+sod(n) for n = 99030094 and 99030103.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 414233 + ... + 414471.

It is an arithmetic number, because the mean of its divisors is an integer number (2678400).

Almost surely, 2^99030128 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 99030128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (107136000).

99030128 is an abundant number, since it is smaller than the sum of its proper divisors (115241872).

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

99030128 is a wasteful number, since it uses less digits than its factorization.

99030128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 342 (or 336 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 32.

The square root of 99030128 is about 9951.3882448631. The cubic root of 99030128 is about 462.6534234606.

The spelling of 99030128 in words is "ninety-nine million, thirty thousand, one hundred twenty-eight".