194745728 has 32 divisors (see below), whose sum is σ = 388875000. Its totient is φ = 97145856.

The previous prime is 194745721. The next prime is 194745731. The reversal of 194745728 is 827547491.

194745728 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (32).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (194745721) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 62348 + ... + 65396.

Almost surely, 2^194745728 is an apocalyptic number.

It is an amenable number.

194745728 is a deficient number, since it is larger than the sum of its proper divisors (194129272).

194745728 is an equidigital number, since it uses as much as digits as its factorization.

194745728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3562 (or 3550 counting only the distinct ones).

The product of its digits is 564480, while the sum is 47.

The square root of 194745728 is about 13955.1326758293. The cubic root of 194745728 is about 579.6368396425.

The spelling of 194745728 in words is "one hundred ninety-four million, seven hundred forty-five thousand, seven hundred twenty-eight".