189672808 has 64 divisors (see below), whose sum is σ = 411505920. Its totient is φ = 81177600.

The previous prime is 189672803. The next prime is 189672811. The reversal of 189672808 is 808276981.

189672808 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (189672803) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 124773 + ... + 126283.

It is an arithmetic number, because the mean of its divisors is an integer number (6429780).

Almost surely, 2^189672808 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 189672808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (205752960).

189672808 is an abundant number, since it is smaller than the sum of its proper divisors (221833112).

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

189672808 is a wasteful number, since it uses less digits than its factorization.

189672808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1618 (or 1614 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 49.

The square root of 189672808 is about 13772.1751368475. The cubic root of 189672808 is about 574.5595194915.

The spelling of 189672808 in words is "one hundred eighty-nine million, six hundred seventy-two thousand, eight hundred eight".