256960238 has 4 divisors (see below), whose sum is σ = 385440360. Its totient is φ = 128480118.

The previous prime is 256960229. The next prime is 256960241. The reversal of 256960238 is 832069652.

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

It is a junction number, because it is equal to n+sod(n) for n = 256960195 and 256960204.

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 as a sum of consecutive naturals, namely, 64240058 + ... + 64240061.

It is an arithmetic number, because the mean of its divisors is an integer number (96360090).

Almost surely, 2^256960238 is an apocalyptic number.

256960238 is a deficient number, since it is larger than the sum of its proper divisors (128480122).

256960238 is a wasteful number, since it uses less digits than its factorization.

256960238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128480121.

The product of its (nonzero) digits is 155520, while the sum is 41.

The square root of 256960238 is about 16029.9793512032. The cubic root of 256960238 is about 635.7533275305.

The spelling of 256960238 in words is "two hundred fifty-six million, nine hundred sixty thousand, two hundred thirty-eight".