256427328 has 56 divisors (see below), whose sum is σ = 679655232. Its totient is φ = 85325824.

The previous prime is 256427317. The next prime is 256427333. The reversal of 256427328 is 823724652.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 186901 + ... + 188267.

Almost surely, 2^256427328 is an apocalyptic number.

It is an amenable number.

256427328 is an abundant number, since it is smaller than the sum of its proper divisors (423227904).

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

256427328 is a wasteful number, since it uses less digits than its factorization.

256427328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2359 (or 2349 counting only the distinct ones).

The product of its digits is 161280, while the sum is 39.

The square root of 256427328 is about 16013.3484318552. The cubic root of 256427328 is about 635.3135269467.

It can be divided in two parts, 2564 and 27328, that added together give a palindrome (29892).

The spelling of 256427328 in words is "two hundred fifty-six million, four hundred twenty-seven thousand, three hundred twenty-eight".