99688288 has 96 divisors (see below), whose sum is σ = 240710400. Its totient is φ = 39688704.

The previous prime is 99688247. The next prime is 99688321. The reversal of 99688288 is 88288699.

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, 250906 + ... + 251302.

It is an arithmetic number, because the mean of its divisors is an integer number (2507400).

Almost surely, 2^99688288 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 99688288, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (120355200).

99688288 is an abundant number, since it is smaller than the sum of its proper divisors (141022112).

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

99688288 is a wasteful number, since it uses less digits than its factorization.

99688288 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 492 (or 484 counting only the distinct ones).

The product of its digits is 3981312, while the sum is 58.

The square root of 99688288 is about 9984.4022354871. The cubic root of 99688288 is about 463.6761017377.

The spelling of 99688288 in words is "ninety-nine million, six hundred eighty-eight thousand, two hundred eighty-eight".