189208120 has 32 divisors (see below), whose sum is σ = 444229920. Its totient is φ = 72392320.

The previous prime is 189208087. The next prime is 189208133. The reversal of 189208120 is 21802981.

It is a happy number.

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, 101911 + ... + 103750.

It is an arithmetic number, because the mean of its divisors is an integer number (13882185).

Almost surely, 2^189208120 is an apocalyptic number.

189208120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

189208120 is an abundant number, since it is smaller than the sum of its proper divisors (255021800).

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

189208120 is a wasteful number, since it uses less digits than its factorization.

189208120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 205695 (or 205691 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 31.

The square root of 189208120 is about 13755.2942534865. The cubic root of 189208120 is about 574.0899226601.

The spelling of 189208120 in words is "one hundred eighty-nine million, two hundred eight thousand, one hundred twenty".