99878288 has 40 divisors (see below), whose sum is σ = 207576000. Its totient is φ = 46410624.

The previous prime is 99878279. The next prime is 99878297. The reversal of 99878288 is 88287899.

It is an interprime number because it is at equal distance from previous prime (99878279) and next prime (99878297).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13013 + ... + 19211.

It is an arithmetic number, because the mean of its divisors is an integer number (5189400).

Almost surely, 2^99878288 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 99878288, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (103788000).

99878288 is an abundant number, since it is smaller than the sum of its proper divisors (107697712).

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

99878288 is a wasteful number, since it uses less digits than its factorization.

99878288 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6279 (or 6273 counting only the distinct ones).

The product of its digits is 4644864, while the sum is 59.

The square root of 99878288 is about 9993.9125471459. The cubic root of 99878288 is about 463.9704945566.

The spelling of 99878288 in words is "ninety-nine million, eight hundred seventy-eight thousand, two hundred eighty-eight".