256034864 has 10 divisors (see below), whose sum is σ = 496067580. Its totient is φ = 128017424.

The previous prime is 256034839. The next prime is 256034869. The reversal of 256034864 is 468430652.

It is not an unprimeable number, because it can be changed into a prime (256034869) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8001074 + ... + 8001105.

It is an arithmetic number, because the mean of its divisors is an integer number (49606758).

Almost surely, 2^256034864 is an apocalyptic number.

It is an amenable number.

256034864 is a deficient number, since it is larger than the sum of its proper divisors (240032716).

256034864 is a wasteful number, since it uses less digits than its factorization.

256034864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16002187 (or 16002181 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 38.

The square root of 256034864 is about 16001.0894629085. The cubic root of 256034864 is about 634.9892440363.

The spelling of 256034864 in words is "two hundred fifty-six million, thirty-four thousand, eight hundred sixty-four".