189043072 has 64 divisors (see below), whose sum is σ = 396453600. Its totient is φ = 89616384.

The previous prime is 189043069. The next prime is 189043081. The reversal of 189043072 is 270340981.

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 462004 + ... + 462412.

Almost surely, 2^189043072 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 189043072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (198226800).

189043072 is an abundant number, since it is smaller than the sum of its proper divisors (207410528).

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

189043072 is a wasteful number, since it uses less digits than its factorization.

189043072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 603 (or 591 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 34.

The square root of 189043072 is about 13749.2935091226. The cubic root of 189043072 is about 573.9229461088.

The spelling of 189043072 in words is "one hundred eighty-nine million, forty-three thousand, seventy-two".