99878080 has 56 divisors (see below), whose sum is σ = 240139728. Its totient is φ = 39564288.

The previous prime is 99878071. The next prime is 99878083. The reversal of 99878080 is 8087899.

It is not an unprimeable number, because it can be changed into a prime (99878083) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32782 + ... + 35698.

Almost surely, 2^99878080 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 99878080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (120069864).

99878080 is an abundant number, since it is smaller than the sum of its proper divisors (140261648).

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

99878080 is a wasteful number, since it uses less digits than its factorization.

99878080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3041 (or 3031 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 49.

The square root of 99878080 is about 9993.9021408057. The cubic root of 99878080 is about 463.9701724782.

The spelling of 99878080 in words is "ninety-nine million, eight hundred seventy-eight thousand, eighty".