187320534 has 16 divisors (see below), whose sum is σ = 379384320. Its totient is φ = 61649640.

The previous prime is 187320527. The next prime is 187320557. The reversal of 187320534 is 435023781.

It is a junction number, because it is equal to n+sod(n) for n = 187320495 and 187320504.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 197122 + ... + 198069.

It is an arithmetic number, because the mean of its divisors is an integer number (23711520).

Almost surely, 2^187320534 is an apocalyptic number.

187320534 is an abundant number, since it is smaller than the sum of its proper divisors (192063786).

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

187320534 is a wasteful number, since it uses less digits than its factorization.

187320534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 395275.

The product of its (nonzero) digits is 20160, while the sum is 33.

The square root of 187320534 is about 13686.5091970159. The cubic root of 187320534 is about 572.1744520624.

The spelling of 187320534 in words is "one hundred eighty-seven million, three hundred twenty thousand, five hundred thirty-four".