987188 has 24 divisors (see below), whose sum is σ = 1814400. Its totient is φ = 469568.

The previous prime is 987143. The next prime is 987191. The reversal of 987188 is 881789.

It is a plaindrome in base 15.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 987188.

It is an unprimeable number.

987188 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, 11048 + ... + 11136.

It is an arithmetic number, because the mean of its divisors is an integer number (75600).

2⁹⁸⁷¹⁸⁸ is an apocalyptic number.

It is an amenable number.

987188 is a deficient number, since it is larger than the sum of its proper divisors (827212).

987188 is a wasteful number, since it uses less digits than its factorization.

987188 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199 (or 197 counting only the distinct ones).

The product of its digits is 32256, while the sum is 41.

The square root of 987188 is about 993.5733490790. The cubic root of 987188 is about 99.5710963802.

The spelling of 987188 in words is "nine hundred eighty-seven thousand, one hundred eighty-eight".