189744 has 40 divisors (see below), whose sum is σ = 505920. Its totient is φ = 61248.

The previous prime is 189743. The next prime is 189757. The reversal of 189744 is 447981.

189744 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (189743) 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, 2799 + ... + 2865.

It is an arithmetic number, because the mean of its divisors is an integer number (12648).

2¹⁸⁹⁷⁴⁴ 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 189744, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (252960).

189744 is an abundant number, since it is smaller than the sum of its proper divisors (316176).

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

189744 is a wasteful number, since it uses less digits than its factorization.

189744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137 (or 131 counting only the distinct ones).

The product of its digits is 8064, while the sum is 33.

The square root of 189744 is about 435.5961432336. The cubic root of 189744 is about 57.4631395767.

The spelling of 189744 in words is "one hundred eighty-nine thousand, seven hundred forty-four".