87438518 has 8 divisors (see below), whose sum is σ = 133948512. Its totient is φ = 42789016.

The previous prime is 87438503. The next prime is 87438521. The reversal of 87438518 is 81583478.

It is a sphenic number, since it is the product of 3 distinct primes.

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 3 ways as a sum of consecutive naturals, for example, 465005 + ... + 465192.

It is an arithmetic number, because the mean of its divisors is an integer number (16743564).

Almost surely, 2^87438518 is an apocalyptic number.

87438518 is a deficient number, since it is larger than the sum of its proper divisors (46509994).

87438518 is a wasteful number, since it uses less digits than its factorization.

87438518 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 930246.

The product of its digits is 215040, while the sum is 44.

The square root of 87438518 is about 9350.8565383071. The cubic root of 87438518 is about 443.8479953384.

The spelling of 87438518 in words is "eighty-seven million, four hundred thirty-eight thousand, five hundred eighteen".