256413544 has 8 divisors (see below), whose sum is σ = 480775410. Its totient is φ = 128206768.

The previous prime is 256413503. The next prime is 256413551. The reversal of 256413544 is 445314652.

256413544 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 194602500 + 61811044 = 13950^2 + 7862^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16025839 + ... + 16025854.

Almost surely, 2^256413544 is an apocalyptic number.

It is an amenable number.

256413544 is a deficient number, since it is larger than the sum of its proper divisors (224361866).

256413544 is a wasteful number, since it uses less digits than its factorization.

256413544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32051699 (or 32051695 counting only the distinct ones).

The product of its digits is 57600, while the sum is 34.

The square root of 256413544 is about 16012.9180351365. The cubic root of 256413544 is about 635.3021431905.

The spelling of 256413544 in words is "two hundred fifty-six million, four hundred thirteen thousand, five hundred forty-four".