189912528 has 60 divisors (see below), whose sum is σ = 572380900. Its totient is φ = 58434048.

The previous prime is 189912511. The next prime is 189912529. The reversal of 189912528 is 825219981.

189912528 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 67765824 + 122146704 = 8232^2 + 11052^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189912529) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 48853 + ... + 52596.

Almost surely, 2^189912528 is an apocalyptic number.

189912528 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

189912528 is an abundant number, since it is smaller than the sum of its proper divisors (382468372).

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

189912528 is a wasteful number, since it uses less digits than its factorization.

189912528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101476 (or 101467 counting only the distinct ones).

The product of its digits is 103680, while the sum is 45.

The square root of 189912528 is about 13780.8754438896. The cubic root of 189912528 is about 574.8014719796.

The spelling of 189912528 in words is "one hundred eighty-nine million, nine hundred twelve thousand, five hundred twenty-eight".