256358344 has 48 divisors (see below), whose sum is σ = 545448960. Its totient is φ = 112754400.

The previous prime is 256358321. The next prime is 256358357. The reversal of 256358344 is 443853652.

It is a junction number, because it is equal to n+sod(n) for n = 256358297 and 256358306.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 25737 + ... + 34279.

It is an arithmetic number, because the mean of its divisors is an integer number (11363520).

Almost surely, 2^256358344 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 256358344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (272724480).

256358344 is an abundant number, since it is smaller than the sum of its proper divisors (289090616).

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

256358344 is a wasteful number, since it uses less digits than its factorization.

256358344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8602 (or 8587 counting only the distinct ones).

The product of its digits is 345600, while the sum is 40.

The square root of 256358344 is about 16011.1943339652. The cubic root of 256358344 is about 635.2565512215.

The spelling of 256358344 in words is "two hundred fifty-six million, three hundred fifty-eight thousand, three hundred forty-four".