189023238 has 24 divisors (see below), whose sum is σ = 433642248. Its totient is φ = 59301312.

The previous prime is 189023179. The next prime is 189023251. The reversal of 189023238 is 832320981.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 308556 + ... + 309167.

It is an arithmetic number, because the mean of its divisors is an integer number (18068427).

Almost surely, 2^189023238 is an apocalyptic number.

189023238 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

189023238 is an abundant number, since it is smaller than the sum of its proper divisors (244619010).

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

189023238 is a wasteful number, since it uses less digits than its factorization.

189023238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 617748 (or 617745 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 189023238 is about 13748.5722167795. The cubic root of 189023238 is about 573.9028738122.

The spelling of 189023238 in words is "one hundred eighty-nine million, twenty-three thousand, two hundred thirty-eight".