256944894 has 8 divisors (see below), whose sum is σ = 513889800. Its totient is φ = 85648296.

The previous prime is 256944839. The next prime is 256944899. The reversal of 256944894 is 498449652.

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

256944894 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256944899) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21412069 + ... + 21412080.

It is an arithmetic number, because the mean of its divisors is an integer number (64236225).

Almost surely, 2^256944894 is an apocalyptic number.

256944894 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

256944894 is a wasteful number, since it uses less digits than its factorization.

256944894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42824154.

The product of its digits is 2488320, while the sum is 51.

The square root of 256944894 is about 16029.5007408216. The cubic root of 256944894 is about 635.7406729225.

The spelling of 256944894 in words is "two hundred fifty-six million, nine hundred forty-four thousand, eight hundred ninety-four".