256718316 has 24 divisors (see below), whose sum is σ = 618333184. Its totient is φ = 82812240.

The previous prime is 256718281. The next prime is 256718351. The reversal of 256718316 is 613817652.

It is an interprime number because it is at equal distance from previous prime (256718281) and next prime (256718351).

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, 344680 + ... + 345423.

Almost surely, 2^256718316 is an apocalyptic number.

It is an amenable number.

256718316 is an abundant number, since it is smaller than the sum of its proper divisors (361614868).

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

256718316 is a wasteful number, since it uses less digits than its factorization.

256718316 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 690141 (or 690139 counting only the distinct ones).

The product of its digits is 60480, while the sum is 39.

The square root of 256718316 is about 16022.4316506578. The cubic root of 256718316 is about 635.5537492998.

The spelling of 256718316 in words is "two hundred fifty-six million, seven hundred eighteen thousand, three hundred sixteen".