189982688 has 48 divisors (see below), whose sum is σ = 428811264. Its totient is φ = 81164160.

The previous prime is 189982657. The next prime is 189982697. The reversal of 189982688 is 886289981.

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, 81053 + ... + 83363.

It is an arithmetic number, because the mean of its divisors is an integer number (8933568).

Almost surely, 2^189982688 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 189982688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (214405632).

189982688 is an abundant number, since it is smaller than the sum of its proper divisors (238828576).

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

189982688 is a wasteful number, since it uses less digits than its factorization.

189982688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2695 (or 2687 counting only the distinct ones).

The product of its digits is 3981312, while the sum is 59.

The square root of 189982688 is about 13783.4207655429. The cubic root of 189982688 is about 574.8722468543.

The spelling of 189982688 in words is "one hundred eighty-nine million, nine hundred eighty-two thousand, six hundred eighty-eight".