189974528 has 24 divisors (see below), whose sum is σ = 379860390. Its totient is φ = 94986240.

The previous prime is 189974527. The next prime is 189974531. The reversal of 189974528 is 825479981.

It can be written as a sum of positive squares in only one way, i.e., 181494784 + 8479744 = 13472^2 + 2912^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 189974528.

It is not an unprimeable number, because it can be changed into a prime (189974527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44333 + ... + 48428.

Almost surely, 2^189974528 is an apocalyptic number.

It is an amenable number.

189974528 is a deficient number, since it is larger than the sum of its proper divisors (189885862).

189974528 is an frugal number, since it uses more digits than its factorization.

189974528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92783 (or 92763 counting only the distinct ones).

The product of its digits is 1451520, while the sum is 53.

The square root of 189974528 is about 13783.1247545685. The cubic root of 189974528 is about 574.8640162365.

The spelling of 189974528 in words is "one hundred eighty-nine million, nine hundred seventy-four thousand, five hundred twenty-eight".