256324845 has 16 divisors (see below), whose sum is σ = 468708480. Its totient is φ = 117177024.

The previous prime is 256324841. The next prime is 256324853. The reversal of 256324845 is 548423652.

It is not a de Polignac number, because 256324845 - 2² = 256324841 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256324841) by changing a digit.

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, 1220490 + ... + 1220699.

It is an arithmetic number, because the mean of its divisors is an integer number (29294280).

Almost surely, 2^256324845 is an apocalyptic number.

It is an amenable number.

256324845 is a deficient number, since it is larger than the sum of its proper divisors (212383635).

256324845 is a wasteful number, since it uses less digits than its factorization.

256324845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2441204.

The product of its digits is 230400, while the sum is 39.

The square root of 256324845 is about 16010.1481879463. The cubic root of 256324845 is about 635.2288798171.

The spelling of 256324845 in words is "two hundred fifty-six million, three hundred twenty-four thousand, eight hundred forty-five".