256026678 has 16 divisors (see below), whose sum is σ = 512219136. Its totient is φ = 85314600.

The previous prime is 256026677. The next prime is 256026689. The reversal of 256026678 is 876620652.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256026677) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 23403 + ... + 32553.

It is an arithmetic number, because the mean of its divisors is an integer number (32013696).

Almost surely, 2^256026678 is an apocalyptic number.

256026678 is an abundant number, since it is smaller than the sum of its proper divisors (256192458).

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

256026678 is a wasteful number, since it uses less digits than its factorization.

256026678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13819.

The product of its (nonzero) digits is 241920, while the sum is 42.

The square root of 256026678 is about 16000.8336657813. The cubic root of 256026678 is about 634.9824766281.

The spelling of 256026678 in words is "two hundred fifty-six million, twenty-six thousand, six hundred seventy-eight".