87728184 has 80 divisors (see below), whose sum is σ = 252430200. Its totient is φ = 28444608.

The previous prime is 87728167. The next prime is 87728203. The reversal of 87728184 is 48182778.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 22147 + ... + 25805.

Almost surely, 2^87728184 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 87728184, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (126215100).

87728184 is an abundant number, since it is smaller than the sum of its proper divisors (164702016).

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

87728184 is a wasteful number, since it uses less digits than its factorization.

87728184 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3714 (or 3701 counting only the distinct ones).

The product of its digits is 200704, while the sum is 45.

The square root of 87728184 is about 9366.3324732790. The cubic root of 87728184 is about 444.3375811039.

The spelling of 87728184 in words is "eighty-seven million, seven hundred twenty-eight thousand, one hundred eighty-four".