195712728 has 16 divisors (see below), whose sum is σ = 489281880. Its totient is φ = 65237568.

The previous prime is 195712717. The next prime is 195712739. The reversal of 195712728 is 827217591.

It is an interprime number because it is at equal distance from previous prime (195712717) and next prime (195712739).

It is a self number, because there is not a number n which added to its sum of digits gives 195712728.

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, 4077325 + ... + 4077372.

Almost surely, 2^195712728 is an apocalyptic number.

It is an amenable number.

195712728 is an abundant number, since it is smaller than the sum of its proper divisors (293569152).

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

195712728 is a wasteful number, since it uses less digits than its factorization.

195712728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8154706 (or 8154702 counting only the distinct ones).

The product of its digits is 70560, while the sum is 42.

The square root of 195712728 is about 13989.7365236090. The cubic root of 195712728 is about 580.5946418229.

The spelling of 195712728 in words is "one hundred ninety-five million, seven hundred twelve thousand, seven hundred twenty-eight".