189678216 has 192 divisors, whose sum is σ = 626270400. Its totient is φ = 47319552.

The previous prime is 189678199. The next prime is 189678227. The reversal of 189678216 is 612876981.

It is a congruent number.

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 47 ways as a sum of consecutive naturals, for example, 290146 + ... + 290798.

It is an arithmetic number, because the mean of its divisors is an integer number (3261825).

Almost surely, 2^189678216 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 189678216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (313135200).

189678216 is an abundant number, since it is smaller than the sum of its proper divisors (436592184).

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

189678216 is a wasteful number, since it uses less digits than its factorization.

189678216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 708 (or 697 counting only the distinct ones).

The product of its digits is 290304, while the sum is 48.

The square root of 189678216 is about 13772.3714733520. The cubic root of 189678216 is about 574.5649801027.

The spelling of 189678216 in words is "one hundred eighty-nine million, six hundred seventy-eight thousand, two hundred sixteen".