256111678 has 16 divisors (see below), whose sum is σ = 405573120. Its totient is φ = 120960216.

The previous prime is 256111649. The next prime is 256111679. The reversal of 256111678 is 876111652.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256111679) 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 7 ways as a sum of consecutive naturals, for example, 3475 + ... + 22897.

It is an arithmetic number, because the mean of its divisors is an integer number (25348320).

Almost surely, 2^256111678 is an apocalyptic number.

256111678 is a deficient number, since it is larger than the sum of its proper divisors (149461442).

256111678 is a wasteful number, since it uses less digits than its factorization.

256111678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19791.

The product of its digits is 20160, while the sum is 37.

The square root of 256111678 is about 16003.4895569685. The cubic root of 256111678 is about 635.0527395384.

The spelling of 256111678 in words is "two hundred fifty-six million, one hundred eleven thousand, six hundred seventy-eight".