87102 has 16 divisors (see below), whose sum is σ = 193680. Its totient is φ = 29016.

The previous prime is 87083. The next prime is 87103. The reversal of 87102 is 20178.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87103) by changing a digit.

87102 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 753 + ... + 860.

It is an arithmetic number, because the mean of its divisors is an integer number (12105).

2⁸⁷¹⁰² is an apocalyptic number.

87102 is an abundant number, since it is smaller than the sum of its proper divisors (106578).

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

It is a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (96840).

87102 is a wasteful number, since it uses less digits than its factorization.

87102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1624 (or 1618 counting only the distinct ones).

The product of its (nonzero) digits is 112, while the sum is 18.

The square root of 87102 is about 295.1304796188. The cubic root of 87102 is about 44.3277861917.

The spelling of 87102 in words is "eighty-seven thousand, one hundred two".