256864246 has 16 divisors (see below), whose sum is σ = 388706544. Its totient is φ = 127299744.

The previous prime is 256864243. The next prime is 256864261. The reversal of 256864246 is 642468652.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256864243) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 176056 + ... + 177508.

It is an arithmetic number, because the mean of its divisors is an integer number (24294159).

Almost surely, 2^256864246 is an apocalyptic number.

256864246 is a deficient number, since it is larger than the sum of its proper divisors (131842298).

256864246 is a wasteful number, since it uses less digits than its factorization.

256864246 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2175.

The product of its digits is 552960, while the sum is 43.

The square root of 256864246 is about 16026.9849316707. The cubic root of 256864246 is about 635.6741520717.

The spelling of 256864246 in words is "two hundred fifty-six million, eight hundred sixty-four thousand, two hundred forty-six".