256927328 has 48 divisors (see below), whose sum is σ = 581372064. Its totient is φ = 109486080.

The previous prime is 256927313. The next prime is 256927339. The reversal of 256927328 is 823729652.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37376 + ... + 43712.

It is an arithmetic number, because the mean of its divisors is an integer number (12111918).

Almost surely, 2^256927328 is an apocalyptic number.

256927328 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 256927328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (290686032).

256927328 is an abundant number, since it is smaller than the sum of its proper divisors (324444736).

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

256927328 is a wasteful number, since it uses less digits than its factorization.

256927328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6535 (or 6527 counting only the distinct ones).

The product of its digits is 362880, while the sum is 44.

The square root of 256927328 is about 16028.9528042227. The cubic root of 256927328 is about 635.7261851531.

The spelling of 256927328 in words is "two hundred fifty-six million, nine hundred twenty-seven thousand, three hundred twenty-eight".