189239328 has 60 divisors (see below), whose sum is σ = 556555230. Its totient is φ = 63078912.

The previous prime is 189239327. The next prime is 189239329. The reversal of 189239328 is 823932981.

It is an interprime number because it is at equal distance from previous prime (189239327) and next prime (189239329).

It can be written as a sum of positive squares in only one way, i.e., 180311184 + 8928144 = 13428^2 + 2988^2 .

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189239321) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 33913 + ... + 39096.

Almost surely, 2^189239328 is an apocalyptic number.

189239328 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

189239328 is an abundant number, since it is smaller than the sum of its proper divisors (367315902).

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

189239328 is an equidigital number, since it uses as much as digits as its factorization.

189239328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73031 (or 73014 counting only the distinct ones).

The product of its digits is 186624, while the sum is 45.

The square root of 189239328 is about 13756.4286062917. The cubic root of 189239328 is about 574.1214844016.

The spelling of 189239328 in words is "one hundred eighty-nine million, two hundred thirty-nine thousand, three hundred twenty-eight".