87909808 has 80 divisors (see below), whose sum is σ = 207328000. Its totient is φ = 35271936.

The previous prime is 87909799. The next prime is 87909821. The reversal of 87909808 is 80890978.

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, 231763 + ... + 232141.

It is an arithmetic number, because the mean of its divisors is an integer number (2591600).

Almost surely, 2^87909808 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 87909808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (103664000).

87909808 is an abundant number, since it is smaller than the sum of its proper divisors (119418192).

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

87909808 is a wasteful number, since it uses less digits than its factorization.

87909808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 522 (or 516 counting only the distinct ones).

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

The square root of 87909808 is about 9376.0230375144. The cubic root of 87909808 is about 444.6440076755.

The spelling of 87909808 in words is "eighty-seven million, nine hundred nine thousand, eight hundred eight".