316430728 has 16 divisors (see below), whose sum is σ = 595423260. Its totient is φ = 157651200.

The previous prime is 316430713. The next prime is 316430783. The reversal of 316430728 is 827034613.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 300606244 + 15824484 = 17338^2 + 3978^2 .

It is a junction number, because it is equal to n+sod(n) for n = 316430693 and 316430702.

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 3 ways as a sum of consecutive naturals, for example, 68133 + ... + 72628.

Almost surely, 2^316430728 is an apocalyptic number.

It is an amenable number.

316430728 is a deficient number, since it is larger than the sum of its proper divisors (278992532).

316430728 is a wasteful number, since it uses less digits than its factorization.

316430728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141048 (or 141044 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 34.

The square root of 316430728 is about 17788.4998805408. The cubic root of 316430728 is about 681.4377939983.

The spelling of 316430728 in words is "three hundred sixteen million, four hundred thirty thousand, seven hundred twenty-eight".