194164428 has 12 divisors (see below), whose sum is σ = 453050360. Its totient is φ = 64721472.

The previous prime is 194164417. The next prime is 194164489. The reversal of 194164428 is 824461491.

It is a tau number, because it is divible by the number of its divisors (12).

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

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, 8090173 + ... + 8090196.

Almost surely, 2^194164428 is an apocalyptic number.

It is an amenable number.

194164428 is an abundant number, since it is smaller than the sum of its proper divisors (258885932).

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

194164428 is a wasteful number, since it uses less digits than its factorization.

194164428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16180376 (or 16180374 counting only the distinct ones).

The product of its digits is 55296, while the sum is 39.

The square root of 194164428 is about 13934.2896482024. The cubic root of 194164428 is about 579.0595420823.

The spelling of 194164428 in words is "one hundred ninety-four million, one hundred sixty-four thousand, four hundred twenty-eight".