256073064 has 32 divisors (see below), whose sum is σ = 689428320. Its totient is φ = 78791616.

The previous prime is 256073033. The next prime is 256073071. The reversal of 256073064 is 460370652.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 410062 + ... + 410685.

It is an arithmetic number, because the mean of its divisors is an integer number (21544635).

Almost surely, 2^256073064 is an apocalyptic number.

256073064 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

256073064 is an abundant number, since it is smaller than the sum of its proper divisors (433355256).

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

256073064 is a wasteful number, since it uses less digits than its factorization.

256073064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 820769 (or 820765 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 33.

The square root of 256073064 is about 16002.2830871098. The cubic root of 256073064 is about 635.0208222655.

The spelling of 256073064 in words is "two hundred fifty-six million, seventy-three thousand, sixty-four".