316890640 has 80 divisors (see below), whose sum is σ = 823447296. Its totient is φ = 112409600.

The previous prime is 316890611. The next prime is 316890643. The reversal of 316890640 is 46098613.

It is a tau number, because it is divible by the number of its divisors (80).

It is a self number, because there is not a number n which added to its sum of digits gives 316890640.

It is not an unprimeable number, because it can be changed into a prime (316890643) 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, 31689 + ... + 40471.

Almost surely, 2^316890640 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 316890640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (411723648).

316890640 is an abundant number, since it is smaller than the sum of its proper divisors (506556656).

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

316890640 is a wasteful number, since it uses less digits than its factorization.

316890640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8848 (or 8842 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 37.

The square root of 316890640 is about 17801.4224150768. The cubic root of 316890640 is about 681.7677763895.

The spelling of 316890640 in words is "three hundred sixteen million, eight hundred ninety thousand, six hundred forty".