256297348 has 6 divisors (see below), whose sum is σ = 448520366. Its totient is φ = 128148672.

The previous prime is 256297343. The next prime is 256297351. The reversal of 256297348 is 843792652.

It can be written as a sum of positive squares in only one way, i.e., 148303684 + 107993664 = 12178^2 + 10392^2 .

It is a junction number, because it is equal to n+sod(n) for n = 256297298 and 256297307.

It is not an unprimeable number, because it can be changed into a prime (256297343) 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 as a sum of consecutive naturals, namely, 32037165 + ... + 32037172.

Almost surely, 2^256297348 is an apocalyptic number.

It is an amenable number.

256297348 is a deficient number, since it is larger than the sum of its proper divisors (192223018).

256297348 is a wasteful number, since it uses less digits than its factorization.

256297348 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64074341 (or 64074339 counting only the distinct ones).

The product of its digits is 725760, while the sum is 46.

The square root of 256297348 is about 16009.2894283288. The cubic root of 256297348 is about 635.2061644834.

The spelling of 256297348 in words is "two hundred fifty-six million, two hundred ninety-seven thousand, three hundred forty-eight".