256028166 has 12 divisors (see below), whose sum is σ = 554727732. Its totient is φ = 85342716.

The previous prime is 256028159. The next prime is 256028189. The reversal of 256028166 is 661820652.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 256028166.

It is a congruent number.

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 5 ways as a sum of consecutive naturals, for example, 7111876 + ... + 7111911.

It is an arithmetic number, because the mean of its divisors is an integer number (46227311).

Almost surely, 2^256028166 is an apocalyptic number.

256028166 is an abundant number, since it is smaller than the sum of its proper divisors (298699566).

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

256028166 is a wasteful number, since it uses less digits than its factorization.

256028166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14223795 (or 14223792 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The square root of 256028166 is about 16000.8801632910. The cubic root of 256028166 is about 634.9837067760.

The spelling of 256028166 in words is "two hundred fifty-six million, twenty-eight thousand, one hundred sixty-six".