189226812 has 24 divisors (see below), whose sum is σ = 443973712. Its totient is φ = 62726400.

The previous prime is 189226811. The next prime is 189226823. The reversal of 189226812 is 218622981.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189226811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41389 + ... + 45732.

Almost surely, 2^189226812 is an apocalyptic number.

189226812 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

189226812 is an abundant number, since it is smaller than the sum of its proper divisors (254746900).

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

189226812 is a wasteful number, since it uses less digits than its factorization.

189226812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87309 (or 87307 counting only the distinct ones).

The product of its digits is 27648, while the sum is 39.

The square root of 189226812 is about 13755.9736841854. The cubic root of 189226812 is about 574.1088269500.

The spelling of 189226812 in words is "one hundred eighty-nine million, two hundred twenty-six thousand, eight hundred twelve".