195745728 has 28 divisors (see below), whose sum is σ = 517911080. Its totient is φ = 65248512.

The previous prime is 195745721. The next prime is 195745729. The reversal of 195745728 is 827547591.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (195745721) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 509563 + ... + 509946.

Almost surely, 2^195745728 is an apocalyptic number.

It is an amenable number.

195745728 is an abundant number, since it is smaller than the sum of its proper divisors (322165352).

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

195745728 is a wasteful number, since it uses less digits than its factorization.

195745728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1019524 (or 1019514 counting only the distinct ones).

The product of its digits is 705600, while the sum is 48.

The square root of 195745728 is about 13990.9159099753. The cubic root of 195745728 is about 580.6272722103.

The spelling of 195745728 in words is "one hundred ninety-five million, seven hundred forty-five thousand, seven hundred twenty-eight".