99878268 has 72 divisors (see below), whose sum is σ = 275788800. Its totient is φ = 28043232.

The previous prime is 99878267. The next prime is 99878279. The reversal of 99878268 is 86287899.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99878267) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 33253 + ... + 36131.

It is an arithmetic number, because the mean of its divisors is an integer number (3830400).

Almost surely, 2^99878268 is an apocalyptic number.

99878268 is a gapful number since it is divisible by the number (98) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 99878268, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (137894400).

99878268 is an abundant number, since it is smaller than the sum of its proper divisors (175910532).

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

99878268 is a wasteful number, since it uses less digits than its factorization.

99878268 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2959 (or 2950 counting only the distinct ones).

The product of its digits is 3483648, while the sum is 57.

The square root of 99878268 is about 9993.9115465367. The cubic root of 99878268 is about 463.9704635876.

The spelling of 99878268 in words is "ninety-nine million, eight hundred seventy-eight thousand, two hundred sixty-eight".