187868304 has 60 divisors (see below), whose sum is σ = 566219836. Its totient is φ = 57805056.

The previous prime is 187868299. The next prime is 187868327. The reversal of 187868304 is 403868781.

It can be written as a sum of positive squares in 2 ways, for example, as 36578304 + 151290000 = 6048^2 + 12300^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 187868304.

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 11 ways as a sum of consecutive naturals, for example, 48307 + ... + 52050.

Almost surely, 2^187868304 is an apocalyptic number.

It is an amenable number.

187868304 is an abundant number, since it is smaller than the sum of its proper divisors (378351532).

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

187868304 is a wasteful number, since it uses less digits than its factorization.

187868304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100384 (or 100375 counting only the distinct ones).

The product of its (nonzero) digits is 258048, while the sum is 45.

The square root of 187868304 is about 13706.5059004839. The cubic root of 187868304 is about 572.7316342415.

The spelling of 187868304 in words is "one hundred eighty-seven million, eight hundred sixty-eight thousand, three hundred four".