99908520 has 64 divisors (see below), whose sum is σ = 301691520. Its totient is φ = 26467584.

The previous prime is 99908519. The next prime is 99908581. The reversal of 99908520 is 2580999.

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, 16189 + ... + 21491.

It is an arithmetic number, because the mean of its divisors is an integer number (4713930).

Almost surely, 2^99908520 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 99908520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (150845760).

99908520 is an abundant number, since it is smaller than the sum of its proper divisors (201783000).

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

99908520 is a wasteful number, since it uses less digits than its factorization.

99908520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5474 (or 5470 counting only the distinct ones).

The product of its (nonzero) digits is 58320, while the sum is 42.

The square root of 99908520 is about 9995.4249534475. The cubic root of 99908520 is about 464.0173026643.

The spelling of 99908520 in words is "ninety-nine million, nine hundred eight thousand, five hundred twenty".