319728916 has 48 divisors (see below), whose sum is σ = 625343488. Its totient is φ = 142041600.

The previous prime is 319728887. The next prime is 319728917. The reversal of 319728916 is 619827913.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (319728917) 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 15 ways as a sum of consecutive naturals, for example, 388081 + ... + 388903.

Almost surely, 2^319728916 is an apocalyptic number.

It is an amenable number.

319728916 is a deficient number, since it is larger than the sum of its proper divisors (305614572).

319728916 is a wasteful number, since it uses less digits than its factorization.

319728916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1112 (or 1110 counting only the distinct ones).

The product of its digits is 163296, while the sum is 46.

The square root of 319728916 is about 17880.9651864769. The cubic root of 319728916 is about 683.7971794718.

The spelling of 319728916 in words is "three hundred nineteen million, seven hundred twenty-eight thousand, nine hundred sixteen".