189688 has 16 divisors (see below), whose sum is σ = 360360. Its totient is φ = 93600.

The previous prime is 189671. The next prime is 189691. The reversal of 189688 is 886981.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 189688.

It is a congruent number.

It is an unprimeable number.

189688 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, 958 + ... + 1138.

2¹⁸⁹⁶⁸⁸ is an apocalyptic number.

It is an amenable number.

189688 is a deficient number, since it is larger than the sum of its proper divisors (170672).

189688 is a wasteful number, since it uses less digits than its factorization.

189688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 318 (or 314 counting only the distinct ones).

The product of its digits is 27648, while the sum is 40.

The square root of 189688 is about 435.5318587658. The cubic root of 189688 is about 57.4574859022.

The spelling of 189688 in words is "one hundred eighty-nine thousand, six hundred eighty-eight".