189444528 has 320 divisors, whose sum is σ = 688844800. Its totient is φ = 48522240.

The previous prime is 189444517. The next prime is 189444533. The reversal of 189444528 is 825444981.

189444528 is a `hidden beast` number, since 1 + 89 + 4 + 44 + 528 = 666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2397993 + ... + 2398071.

It is an arithmetic number, because the mean of its divisors is an integer number (2152640).

Almost surely, 2^189444528 is an apocalyptic number.

189444528 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 189444528, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (344422400).

189444528 is an abundant number, since it is smaller than the sum of its proper divisors (499400272).

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

189444528 is a wasteful number, since it uses less digits than its factorization.

189444528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177 (or 165 counting only the distinct ones).

The product of its digits is 368640, while the sum is 45.

The square root of 189444528 is about 13763.8849166941. The cubic root of 189444528 is about 574.3289239677.

The spelling of 189444528 in words is "one hundred eighty-nine million, four hundred forty-four thousand, five hundred twenty-eight".