189876528 has 80 divisors (see below), whose sum is σ = 555366240. Its totient is φ = 62090496.

The previous prime is 189876497. The next prime is 189876539. The reversal of 189876528 is 825678981.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18750 + ... + 27042.

It is an arithmetic number, because the mean of its divisors is an integer number (6942078).

Almost surely, 2^189876528 is an apocalyptic number.

189876528 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 189876528, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (277683120).

189876528 is an abundant number, since it is smaller than the sum of its proper divisors (365489712).

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

189876528 is a wasteful number, since it uses less digits than its factorization.

189876528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8363 (or 8351 counting only the distinct ones).

The product of its digits is 1935360, while the sum is 54.

The square root of 189876528 is about 13779.5692240360. The cubic root of 189876528 is about 574.7651497126.

The spelling of 189876528 in words is "one hundred eighty-nine million, eight hundred seventy-six thousand, five hundred twenty-eight".