188140 has 24 divisors (see below), whose sum is σ = 413280. Its totient is φ = 71808.

The previous prime is 188137. The next prime is 188143. The reversal of 188140 is 41881.

It is an interprime number because it is at equal distance from previous prime (188137) and next prime (188143).

It is not an unprimeable number, because it can be changed into a prime (188143) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 256 + ... + 664.

It is an arithmetic number, because the mean of its divisors is an integer number (17220).

2¹⁸⁸¹⁴⁰ is an apocalyptic number.

188140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 188140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (206640).

188140 is an abundant number, since it is smaller than the sum of its proper divisors (225140).

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

188140 is a wasteful number, since it uses less digits than its factorization.

188140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 441 (or 439 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 22.

The square root of 188140 is about 433.7510806903. The cubic root of 188140 is about 57.3007596954.

The spelling of 188140 in words is "one hundred eighty-eight thousand, one hundred forty".