256882538 has 16 divisors (see below), whose sum is σ = 438630336. Its totient is φ = 111687840.

The previous prime is 256882537. The next prime is 256882553. The reversal of 256882538 is 835288652.

It is a junction number, because it is equal to n+sod(n) for n = 256882492 and 256882501.

It is not an unprimeable number, because it can be changed into a prime (256882531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 253331 + ... + 254342.

It is an arithmetic number, because the mean of its divisors is an integer number (27414396).

Almost surely, 2^256882538 is an apocalyptic number.

256882538 is a deficient number, since it is larger than the sum of its proper divisors (181747798).

256882538 is a wasteful number, since it uses less digits than its factorization.

256882538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 507709.

The product of its digits is 921600, while the sum is 47.

The square root of 256882538 is about 16027.5555840559. Note that the first 4 decimals coincide. The cubic root of 256882538 is about 635.6892410739.

The spelling of 256882538 in words is "two hundred fifty-six million, eight hundred eighty-two thousand, five hundred thirty-eight".