189588920 has 32 divisors (see below), whose sum is σ = 436983120. Its totient is φ = 73985280.

The previous prime is 189588899. The next prime is 189588937. The reversal of 189588920 is 29885981.

189588920 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

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, 56162 + ... + 59441.

Almost surely, 2^189588920 is an apocalyptic number.

189588920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

189588920 is an abundant number, since it is smaller than the sum of its proper divisors (247394200).

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

189588920 is a wasteful number, since it uses less digits than its factorization.

189588920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115655 (or 115651 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 50.

The square root of 189588920 is about 13769.1292389897. The cubic root of 189588920 is about 574.4748021003.

The spelling of 189588920 in words is "one hundred eighty-nine million, five hundred eighty-eight thousand, nine hundred twenty".