256361344 has 16 divisors (see below), whose sum is σ = 510720120. Its totient is φ = 128180608.

The previous prime is 256361323. The next prime is 256361383. The reversal of 256361344 is 443163652.

It is a tau number, because it is divible by the number of its divisors (16).

It is a super-2 number, since 2×256361344² = 131442277394972672, which contains 22 as substring.

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 as a sum of consecutive naturals, namely, 1001284 + ... + 1001539.

Almost surely, 2^256361344 is an apocalyptic number.

It is an amenable number.

256361344 is a deficient number, since it is larger than the sum of its proper divisors (254358776).

256361344 is an equidigital number, since it uses as much as digits as its factorization.

256361344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2002837 (or 2002825 counting only the distinct ones).

The product of its digits is 51840, while the sum is 34.

The square root of 256361344 is about 16011.2880181452. The cubic root of 256361344 is about 635.2590292140.

The spelling of 256361344 in words is "two hundred fifty-six million, three hundred sixty-one thousand, three hundred forty-four".