87889216 has 42 divisors (see below), whose sum is σ = 180338730. Its totient is φ = 42497280.

The previous prime is 87889177. The next prime is 87889259. The reversal of 87889216 is 61298878.

It can be written as a sum of positive squares in only one way, i.e., 55353600 + 32535616 = 7440^2 + 5704^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 87889216.

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 5 ways as a sum of consecutive naturals, for example, 60790 + ... + 62218.

Almost surely, 2^87889216 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 87889216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (90169365).

87889216 is an abundant number, since it is smaller than the sum of its proper divisors (92449514).

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

87889216 is a wasteful number, since it uses less digits than its factorization.

87889216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1503 (or 1462 counting only the distinct ones).

The product of its digits is 387072, while the sum is 49.

The square root of 87889216 is about 9374.9248530322. The cubic root of 87889216 is about 444.6092871492.

The spelling of 87889216 in words is "eighty-seven million, eight hundred eighty-nine thousand, two hundred sixteen".