256336845 has 16 divisors (see below), whose sum is σ = 412858752. Its totient is φ = 135806400.

The previous prime is 256336837. The next prime is 256336853. The reversal of 256336845 is 548633652.

It is an interprime number because it is at equal distance from previous prime (256336837) and next prime (256336853).

It is not a de Polignac number, because 256336845 - 2³ = 256336837 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 256336797 and 256336806.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 54322 + ... + 58851.

It is an arithmetic number, because the mean of its divisors is an integer number (25803672).

Almost surely, 2^256336845 is an apocalyptic number.

It is an amenable number.

256336845 is a deficient number, since it is larger than the sum of its proper divisors (156521907).

256336845 is a wasteful number, since it uses less digits than its factorization.

256336845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113332.

The product of its digits is 518400, while the sum is 42.

The square root of 256336845 is about 16010.5229458628. The cubic root of 256336845 is about 635.2387925349.

The spelling of 256336845 in words is "two hundred fifty-six million, three hundred thirty-six thousand, eight hundred forty-five".