87871122 has 32 divisors (see below), whose sum is σ = 197952960. Its totient is φ = 28887840.

The previous prime is 87871117. The next prime is 87871123. The reversal of 87871122 is 22117878.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (87871123) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7204 + ... + 15087.

It is an arithmetic number, because the mean of its divisors is an integer number (6186030).

Almost surely, 2^87871122 is an apocalyptic number.

87871122 is an abundant number, since it is smaller than the sum of its proper divisors (110081838).

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

87871122 is a wasteful number, since it uses less digits than its factorization.

87871122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22375 (or 22369 counting only the distinct ones).

The product of its digits is 12544, while the sum is 36.

The square root of 87871122 is about 9373.9597822905. The cubic root of 87871122 is about 444.5787740672.

The spelling of 87871122 in words is "eighty-seven million, eight hundred seventy-one thousand, one hundred twenty-two".