187997084 has 48 divisors (see below), whose sum is σ = 383201280. Its totient is φ = 79752960.

The previous prime is 187997081. The next prime is 187997107. The reversal of 187997084 is 480799781.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (187997081) 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, 94007 + ... + 95985.

It is an arithmetic number, because the mean of its divisors is an integer number (7983360).

Almost surely, 2^187997084 is an apocalyptic number.

It is an amenable number.

187997084 is an abundant number, since it is smaller than the sum of its proper divisors (195204196).

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

187997084 is a wasteful number, since it uses less digits than its factorization.

187997084 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2138 (or 2136 counting only the distinct ones).

The product of its (nonzero) digits is 1016064, while the sum is 53.

The square root of 187997084 is about 13711.2028648109. The cubic root of 187997084 is about 572.8624697468.

The spelling of 187997084 in words is "one hundred eighty-seven million, nine hundred ninety-seven thousand, eighty-four".