87443868 has 12 divisors (see below), whose sum is σ = 204035720. Its totient is φ = 29147952.

The previous prime is 87443849. The next prime is 87443891. The reversal of 87443868 is 86834478.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3643483 + ... + 3643506.

Almost surely, 2^87443868 is an apocalyptic number.

It is an amenable number.

87443868 is an abundant number, since it is smaller than the sum of its proper divisors (116591852).

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

87443868 is a wasteful number, since it uses less digits than its factorization.

87443868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7286996 (or 7286994 counting only the distinct ones).

The product of its digits is 1032192, while the sum is 48.

The square root of 87443868 is about 9351.1426039816. The cubic root of 87443868 is about 443.8570475593.

The spelling of 87443868 in words is "eighty-seven million, four hundred forty-three thousand, eight hundred sixty-eight".