87043518 has 16 divisors (see below), whose sum is σ = 193430160. Its totient is φ = 29014488.

The previous prime is 87043507. The next prime is 87043559. The reversal of 87043518 is 81534078.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 805905 + ... + 806012.

It is an arithmetic number, because the mean of its divisors is an integer number (12089385).

Almost surely, 2^87043518 is an apocalyptic number.

87043518 is an abundant number, since it is smaller than the sum of its proper divisors (106386642).

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

87043518 is a wasteful number, since it uses less digits than its factorization.

87043518 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1611928 (or 1611922 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 36.

The square root of 87043518 is about 9329.7115711044. The cubic root of 87043518 is about 443.1786312068.

The spelling of 87043518 in words is "eighty-seven million, forty-three thousand, five hundred eighteen".