87805928 has 64 divisors (see below), whose sum is σ = 194745600. Its totient is φ = 36334080.

The previous prime is 87805889. The next prime is 87805937. The reversal of 87805928 is 82950878.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 383318 + ... + 383546.

It is an arithmetic number, because the mean of its divisors is an integer number (3042900).

Almost surely, 2^87805928 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 87805928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (97372800).

87805928 is an abundant number, since it is smaller than the sum of its proper divisors (106939672).

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

87805928 is a wasteful number, since it uses less digits than its factorization.

87805928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 450 (or 446 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 47.

The square root of 87805928 is about 9370.4817378831. The cubic root of 87805928 is about 444.4687984618.

The spelling of 87805928 in words is "eighty-seven million, eight hundred five thousand, nine hundred twenty-eight".