187387340 has 24 divisors (see below), whose sum is σ = 449729952. Its totient is φ = 64247040.

The previous prime is 187387339. The next prime is 187387391. The reversal of 187387340 is 43783781.

It is a super-2 number, since 2×187387340² = 70228030384551200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 669101 + ... + 669380.

It is an arithmetic number, because the mean of its divisors is an integer number (18738748).

Almost surely, 2^187387340 is an apocalyptic number.

187387340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

187387340 is an abundant number, since it is smaller than the sum of its proper divisors (262342612).

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

187387340 is a wasteful number, since it uses less digits than its factorization.

187387340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1338497 (or 1338495 counting only the distinct ones).

The product of its (nonzero) digits is 112896, while the sum is 41.

The square root of 187387340 is about 13688.9495579464. The cubic root of 187387340 is about 572.2424640815.

The spelling of 187387340 in words is "one hundred eighty-seven million, three hundred eighty-seven thousand, three hundred forty".