194673728 has 56 divisors (see below), whose sum is σ = 399117312. Its totient is φ = 94155264.

The previous prime is 194673701. The next prime is 194673757. The reversal of 194673728 is 827376491.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 349226 + ... + 349782.

Almost surely, 2^194673728 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 194673728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (199558656).

194673728 is an abundant number, since it is smaller than the sum of its proper divisors (204443584).

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

194673728 is a wasteful number, since it uses less digits than its factorization.

194673728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 739 (or 729 counting only the distinct ones).

The product of its digits is 508032, while the sum is 47.

The square root of 194673728 is about 13952.5527413445. The cubic root of 194673728 is about 579.5653977729.

The spelling of 194673728 in words is "one hundred ninety-four million, six hundred seventy-three thousand, seven hundred twenty-eight".