256832378 has 32 divisors (see below), whose sum is σ = 435359232. Its totient is φ = 112618800.

The previous prime is 256832357. The next prime is 256832383. The reversal of 256832378 is 873238652.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 76883 + ... + 80153.

It is an arithmetic number, because the mean of its divisors is an integer number (13604976).

Almost surely, 2^256832378 is an apocalyptic number.

256832378 is a deficient number, since it is larger than the sum of its proper divisors (178526854).

256832378 is a wasteful number, since it uses less digits than its factorization.

256832378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3410.

The product of its digits is 483840, while the sum is 44.

The square root of 256832378 is about 16025.9907026056. The cubic root of 256832378 is about 635.6478625666.

The spelling of 256832378 in words is "two hundred fifty-six million, eight hundred thirty-two thousand, three hundred seventy-eight".