256533328 has 20 divisors (see below), whose sum is σ = 497828628. Its totient is φ = 128061440.

The previous prime is 256533323. The next prime is 256533331. The reversal of 256533328 is 823335652.

It can be written as a sum of positive squares in 2 ways, for example, as 246113344 + 10419984 = 15688^2 + 3228^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256533323) 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 3 ways as a sum of consecutive naturals, for example, 2251 + ... + 22762.

Almost surely, 2^256533328 is an apocalyptic number.

It is an amenable number.

256533328 is a deficient number, since it is larger than the sum of its proper divisors (241295300).

256533328 is a wasteful number, since it uses less digits than its factorization.

256533328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25662 (or 25656 counting only the distinct ones).

The product of its digits is 129600, while the sum is 37.

The square root of 256533328 is about 16016.6578286483. The cubic root of 256533328 is about 635.4010552629.

The spelling of 256533328 in words is "two hundred fifty-six million, five hundred thirty-three thousand, three hundred twenty-eight".