256288344 has 96 divisors (see below), whose sum is σ = 713443920. Its totient is φ = 76211712.

The previous prime is 256288343. The next prime is 256288349. The reversal of 256288344 is 443882652.

256288344 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 256288296 and 256288305.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256288343) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1719982 + ... + 1720130.

Almost surely, 2^256288344 is an apocalyptic number.

256288344 is a gapful number since it is divisible by the number (24) 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 256288344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (356721960).

256288344 is an abundant number, since it is smaller than the sum of its proper divisors (457155576).

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

256288344 is a wasteful number, since it uses less digits than its factorization.

256288344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 357 (or 204 counting only the distinct ones).

The product of its digits is 368640, while the sum is 42.

The square root of 256288344 is about 16009.0082141274. The cubic root of 256288344 is about 635.1987259057.

The spelling of 256288344 in words is "two hundred fifty-six million, two hundred eighty-eight thousand, three hundred forty-four".