87117192 has 96 divisors (see below), whose sum is σ = 254292480. Its totient is φ = 26864640.

The previous prime is 87117187. The next prime is 87117209. The reversal of 87117192 is 29171178.

It is a Harshad number since it is a multiple of its sum of digits (36).

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 23 ways as a sum of consecutive naturals, for example, 50488 + ... + 52184.

It is an arithmetic number, because the mean of its divisors is an integer number (2648880).

Almost surely, 2^87117192 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 87117192, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (127146240).

87117192 is an abundant number, since it is smaller than the sum of its proper divisors (167175288).

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

87117192 is a wasteful number, since it uses less digits than its factorization.

87117192 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1763 (or 1756 counting only the distinct ones).

The product of its digits is 7056, while the sum is 36.

The square root of 87117192 is about 9333.6590895532. The cubic root of 87117192 is about 443.3036320326.

The spelling of 87117192 in words is "eighty-seven million, one hundred seventeen thousand, one hundred ninety-two".