87712170 has 192 divisors, whose sum is σ = 276514560. Its totient is φ = 17335296.

The previous prime is 87712147. The next prime is 87712213. The reversal of 87712170 is 7121778.

It is a super-2 number, since 2×87712170² = 15386849532217800, which contains 22 as substring.

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 95 ways as a sum of consecutive naturals, for example, 985486 + ... + 985574.

It is an arithmetic number, because the mean of its divisors is an integer number (1440180).

Almost surely, 2^87712170 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 87712170, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (138257280).

87712170 is an abundant number, since it is smaller than the sum of its proper divisors (188802390).

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

87712170 is a wasteful number, since it uses less digits than its factorization.

87712170 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157 (or 138 counting only the distinct ones).

The product of its (nonzero) digits is 5488, while the sum is 33.

The square root of 87712170 is about 9365.4775639046. The cubic root of 87712170 is about 444.3105428337.

The spelling of 87712170 in words is "eighty-seven million, seven hundred twelve thousand, one hundred seventy".