256838018 has 8 divisors (see below), whose sum is σ = 385409280. Its totient is φ = 128368260.

The previous prime is 256838003. The next prime is 256838041. The reversal of 256838018 is 810838652.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 18698 + ... + 29381.

It is an arithmetic number, because the mean of its divisors is an integer number (48176160).

Almost surely, 2^256838018 is an apocalyptic number.

256838018 is a deficient number, since it is larger than the sum of its proper divisors (128571262).

256838018 is a wasteful number, since it uses less digits than its factorization.

256838018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50752.

The product of its (nonzero) digits is 92160, while the sum is 41.

The square root of 256838018 is about 16026.1666658000. The cubic root of 256838018 is about 635.6525154427.

The spelling of 256838018 in words is "two hundred fifty-six million, eight hundred thirty-eight thousand, eighteen".