189578196 has 72 divisors (see below), whose sum is σ = 489216000. Its totient is φ = 61888320.

The previous prime is 189578173. The next prime is 189578197. The reversal of 189578196 is 691875981.

It is a super-2 number, since 2×189578196² = 71879784797228832, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189578197) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 543030 + ... + 543378.

Almost surely, 2^189578196 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 189578196, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (244608000).

189578196 is an abundant number, since it is smaller than the sum of its proper divisors (299637804).

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

189578196 is a wasteful number, since it uses less digits than its factorization.

189578196 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 629 (or 624 counting only the distinct ones).

The product of its digits is 1088640, while the sum is 54.

The square root of 189578196 is about 13768.7398116167. The cubic root of 189578196 is about 574.4639702719.

The spelling of 189578196 in words is "one hundred eighty-nine million, five hundred seventy-eight thousand, one hundred ninety-six".