188920 has 16 divisors (see below), whose sum is σ = 425160. Its totient is φ = 75552.

The previous prime is 188911. The next prime is 188927. The reversal of 188920 is 29881.

188920 is nontrivially palindromic in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (188927) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2322 + ... + 2401.

2¹⁸⁸⁹²⁰ is an apocalyptic number.

188920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

188920 is an abundant number, since it is smaller than the sum of its proper divisors (236240).

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

188920 is a wasteful number, since it uses less digits than its factorization.

188920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4734 (or 4730 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 28.

The square root of 188920 is about 434.6492839060. The cubic root of 188920 is about 57.3798372773.

The spelling of 188920 in words is "one hundred eighty-eight thousand, nine hundred twenty".