189687080 has 32 divisors (see below), whose sum is σ = 465596640. Its totient is φ = 68976960.

The previous prime is 189687059. The next prime is 189687097. The reversal of 189687080 is 80786981.

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, 215114 + ... + 215993.

It is an arithmetic number, because the mean of its divisors is an integer number (14549895).

Almost surely, 2^189687080 is an apocalyptic number.

189687080 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

189687080 is an abundant number, since it is smaller than the sum of its proper divisors (275909560).

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

189687080 is a wasteful number, since it uses less digits than its factorization.

189687080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 431129 (or 431125 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 47.

The square root of 189687080 is about 13772.6932732854. The cubic root of 189687080 is about 574.5739301107.

The spelling of 189687080 in words is "one hundred eighty-nine million, six hundred eighty-seven thousand, eighty".