99734128 has 80 divisors (see below), whose sum is σ = 216548640. Its totient is φ = 44209152.

The previous prime is 99734113. The next prime is 99734137. The reversal of 99734128 is 82143799.

It is a congruent number.

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, 914938 + ... + 915046.

It is an arithmetic number, because the mean of its divisors is an integer number (2706858).

Almost surely, 2^99734128 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 99734128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (108274320).

99734128 is an abundant number, since it is smaller than the sum of its proper divisors (116814512).

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

99734128 is a wasteful number, since it uses less digits than its factorization.

99734128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 266 (or 260 counting only the distinct ones).

The product of its digits is 108864, while the sum is 43.

The square root of 99734128 is about 9986.6975522442. The cubic root of 99734128 is about 463.7471620928.

The spelling of 99734128 in words is "ninety-nine million, seven hundred thirty-four thousand, one hundred twenty-eight".