189444432 has 20 divisors (see below), whose sum is σ = 489398240. Its totient is φ = 63148128.

The previous prime is 189444427. The next prime is 189444469. The reversal of 189444432 is 234444981.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1973332 + ... + 1973427.

It is an arithmetic number, because the mean of its divisors is an integer number (24469912).

Almost surely, 2^189444432 is an apocalyptic number.

189444432 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

189444432 is an abundant number, since it is smaller than the sum of its proper divisors (299953808).

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

189444432 is a wasteful number, since it uses less digits than its factorization.

189444432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3946770 (or 3946764 counting only the distinct ones).

The product of its digits is 110592, while the sum is 39.

The square root of 189444432 is about 13763.8814293062. The cubic root of 189444432 is about 574.3288269550.

The spelling of 189444432 in words is "one hundred eighty-nine million, four hundred forty-four thousand, four hundred thirty-two".