256871334 has 16 divisors (see below), whose sum is σ = 513900288. Its totient is φ = 85597512.

The previous prime is 256871333. The next prime is 256871339. The reversal of 256871334 is 433178652.

It is a junction number, because it is equal to n+sod(n) for n = 256871292 and 256871301.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256871333) by changing a digit.

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, 32479 + ... + 39605.

It is an arithmetic number, because the mean of its divisors is an integer number (32118768).

Almost surely, 2^256871334 is an apocalyptic number.

256871334 is an abundant number, since it is smaller than the sum of its proper divisors (257028954).

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

256871334 is a wasteful number, since it uses less digits than its factorization.

256871334 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13139.

The product of its digits is 120960, while the sum is 39.

The square root of 256871334 is about 16027.2060572016. The cubic root of 256871334 is about 635.6799990213.

The spelling of 256871334 in words is "two hundred fifty-six million, eight hundred seventy-one thousand, three hundred thirty-four".