316649720 has 32 divisors (see below), whose sum is σ = 713171520. Its totient is φ = 126533760.

The previous prime is 316649713. The next prime is 316649741. The reversal of 316649720 is 27946613.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43889 + ... + 50591.

It is an arithmetic number, because the mean of its divisors is an integer number (22286610).

Almost surely, 2^316649720 is an apocalyptic number.

It is an amenable number.

316649720 is an abundant number, since it is smaller than the sum of its proper divisors (396521800).

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

316649720 is a wasteful number, since it uses less digits than its factorization.

316649720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7895 (or 7891 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 38.

The square root of 316649720 is about 17794.6542534549. The cubic root of 316649720 is about 681.5949584788.

The spelling of 316649720 in words is "three hundred sixteen million, six hundred forty-nine thousand, seven hundred twenty".