187928130 has 32 divisors (see below), whose sum is σ = 485722944. Its totient is φ = 46259136.

The previous prime is 187928119. The next prime is 187928141. The reversal of 187928130 is 31829781.

It is an interprime number because it is at equal distance from previous prime (187928119) and next prime (187928141).

It is a Harshad number since it is a multiple of its sum of digits (39).

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 15 ways as a sum of consecutive naturals, for example, 240544 + ... + 241323.

It is an arithmetic number, because the mean of its divisors is an integer number (15178842).

Almost surely, 2^187928130 is an apocalyptic number.

187928130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

187928130 is an abundant number, since it is smaller than the sum of its proper divisors (297794814).

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

187928130 is a wasteful number, since it uses less digits than its factorization.

187928130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 481890.

The product of its (nonzero) digits is 24192, while the sum is 39.

The square root of 187928130 is about 13708.6881210421. The cubic root of 187928130 is about 572.7924225802.

The spelling of 187928130 in words is "one hundred eighty-seven million, nine hundred twenty-eight thousand, one hundred thirty".