87870188 has 12 divisors (see below), whose sum is σ = 175740432. Its totient is φ = 37658640.

The previous prime is 87870187. The next prime is 87870247. The reversal of 87870188 is 88107878.

87870188 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (87870187) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1569083 + ... + 1569138.

It is an arithmetic number, because the mean of its divisors is an integer number (14645036).

Almost surely, 2^87870188 is an apocalyptic number.

It is an amenable number.

87870188 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

87870188 is a wasteful number, since it uses less digits than its factorization.

87870188 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3138232 (or 3138230 counting only the distinct ones).

The product of its (nonzero) digits is 200704, while the sum is 47.

The square root of 87870188 is about 9373.9099632971. The cubic root of 87870188 is about 444.5771988889.

The spelling of 87870188 in words is "eighty-seven million, eight hundred seventy thousand, one hundred eighty-eight".