188608 has 28 divisors (see below), whose sum is σ = 428752. Its totient is φ = 80640.

The previous prime is 188603. The next prime is 188609. The reversal of 188608 is 806881.

188608 is nontrivially palindromic in base 6.

It is a tau number, because it is divible by the number of its divisors (28).

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 188608.

It is not an unprimeable number, because it can be changed into a prime (188603) by changing a digit.

188608 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 238 + ... + 658.

2¹⁸⁸⁶⁰⁸ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 188608, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (214376).

188608 is an abundant number, since it is smaller than the sum of its proper divisors (240144).

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

188608 is an equidigital number, since it uses as much as digits as its factorization.

188608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 440 (or 430 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 31.

The square root of 188608 is about 434.2902255405. The cubic root of 188608 is about 57.3482324118.

The spelling of 188608 in words is "one hundred eighty-eight thousand, six hundred eight".