189684 has 36 divisors (see below), whose sum is σ = 524160. Its totient is φ = 57360.

The previous prime is 189671. The next prime is 189691. The reversal of 189684 is 486981.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 157 + ... + 635.

It is an arithmetic number, because the mean of its divisors is an integer number (14560).

2¹⁸⁹⁶⁸⁴ 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 189684, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (262080).

189684 is an abundant number, since it is smaller than the sum of its proper divisors (334476).

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

189684 is a wasteful number, since it uses less digits than its factorization.

189684 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 500 (or 495 counting only the distinct ones).

The product of its digits is 13824, while the sum is 36.

The square root of 189684 is about 435.5272666550. The cubic root of 189684 is about 57.4570820257.

The spelling of 189684 in words is "one hundred eighty-nine thousand, six hundred eighty-four".