87438870 has 96 divisors (see below), whose sum is σ = 242004672. Its totient is φ = 21854976.

The previous prime is 87438839. The next prime is 87438887. The reversal of 87438870 is 7883478.

It is a Harshad number since it is a multiple of its sum of digits (45).

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 47 ways as a sum of consecutive naturals, for example, 109312 + ... + 110108.

It is an arithmetic number, because the mean of its divisors is an integer number (2520882).

Almost surely, 2^87438870 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 87438870, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (121002336).

87438870 is an abundant number, since it is smaller than the sum of its proper divisors (154565802).

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

87438870 is a wasteful number, since it uses less digits than its factorization.

87438870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 886 (or 883 counting only the distinct ones).

The product of its (nonzero) digits is 301056, while the sum is 45.

The square root of 87438870 is about 9350.8753600933. The cubic root of 87438870 is about 443.8485909351.

The spelling of 87438870 in words is "eighty-seven million, four hundred thirty-eight thousand, eight hundred seventy".