256718076 has 12 divisors (see below), whose sum is σ = 599008872. Its totient is φ = 85572688.

The previous prime is 256718069. The next prime is 256718081. The reversal of 256718076 is 670817652.

It is a tau number, because it is divible by the number of its divisors (12).

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 in 3 ways as a sum of consecutive naturals, for example, 10696575 + ... + 10696598.

It is an arithmetic number, because the mean of its divisors is an integer number (49917406).

Almost surely, 2^256718076 is an apocalyptic number.

It is an amenable number.

256718076 is an abundant number, since it is smaller than the sum of its proper divisors (342290796).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

256718076 is a wasteful number, since it uses less digits than its factorization.

256718076 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21393180 (or 21393178 counting only the distinct ones).

The product of its (nonzero) digits is 141120, while the sum is 42.

The square root of 256718076 is about 16022.4241611561. The cubic root of 256718076 is about 635.5535512449.

The spelling of 256718076 in words is "two hundred fifty-six million, seven hundred eighteen thousand, seventy-six".