194531228 has 12 divisors (see below), whose sum is σ = 341442192. Its totient is φ = 96976320.

The previous prime is 194531219. The next prime is 194531279. The reversal of 194531228 is 822135491.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 70808 + ... + 73503.

It is an arithmetic number, because the mean of its divisors is an integer number (28453516).

Almost surely, 2^194531228 is an apocalyptic number.

It is an amenable number.

194531228 is a deficient number, since it is larger than the sum of its proper divisors (146910964).

194531228 is a wasteful number, since it uses less digits than its factorization.

194531228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144652 (or 144650 counting only the distinct ones).

The product of its digits is 17280, while the sum is 35.

The square root of 194531228 is about 13947.4452140885. The cubic root of 194531228 is about 579.4239504574.

The spelling of 194531228 in words is "one hundred ninety-four million, five hundred thirty-one thousand, two hundred twenty-eight".