256317414 has 16 divisors (see below), whose sum is σ = 523542528. Its totient is φ = 83621192.

The previous prime is 256317409. The next prime is 256317421. The reversal of 256317414 is 414713652.

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, 454182 + ... + 454745.

It is an arithmetic number, because the mean of its divisors is an integer number (32721408).

Almost surely, 2^256317414 is an apocalyptic number.

256317414 is an abundant number, since it is smaller than the sum of its proper divisors (267225114).

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

256317414 is a wasteful number, since it uses less digits than its factorization.

256317414 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 908979.

The product of its digits is 20160, while the sum is 33.

The square root of 256317414 is about 16009.9161147084. The cubic root of 256317414 is about 635.2227412114. Note that the first 3 decimals are identical.

The spelling of 256317414 in words is "two hundred fifty-six million, three hundred seventeen thousand, four hundred fourteen".