256362538 has 4 divisors (see below), whose sum is σ = 384543810. Its totient is φ = 128181268.

The previous prime is 256362521. The next prime is 256362541. The reversal of 256362538 is 835263652.

256362538 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 170485249 + 85877289 = 13057^2 + 9267^2 .

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 256362538.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64090633 + ... + 64090636.

Almost surely, 2^256362538 is an apocalyptic number.

256362538 is a deficient number, since it is larger than the sum of its proper divisors (128181272).

256362538 is a wasteful number, since it uses less digits than its factorization.

256362538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128181271.

The product of its digits is 259200, while the sum is 40.

The square root of 256362538 is about 16011.3253042963. The cubic root of 256362538 is about 635.2600154497.

The spelling of 256362538 in words is "two hundred fifty-six million, three hundred sixty-two thousand, five hundred thirty-eight".