188368 has 20 divisors (see below), whose sum is σ = 372868. Its totient is φ = 92160.

The previous prime is 188359. The next prime is 188369. The reversal of 188368 is 863881.

It can be written as a sum of positive squares in 2 ways, for example, as 21904 + 166464 = 148^2 + 408^2 .

Its product of digits (9216) is a multiple of the sum of its prime divisors (256).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (188369) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 880 + ... + 1072.

2¹⁸⁸³⁶⁸ is an apocalyptic number.

It is an amenable number.

188368 is a deficient number, since it is larger than the sum of its proper divisors (184500).

188368 is a wasteful number, since it uses less digits than its factorization.

188368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 262 (or 256 counting only the distinct ones).

The product of its digits is 9216, while the sum is 34.

The square root of 188368 is about 434.0138246646. The cubic root of 188368 is about 57.3238972512.

The spelling of 188368 in words is "one hundred eighty-eight thousand, three hundred sixty-eight".