256816076 has 24 divisors (see below), whose sum is σ = 519127056. Its totient is φ = 109867520.

The previous prime is 256816073. The next prime is 256816097. The reversal of 256816076 is 670618652.

It is not an unprimeable number, because it can be changed into a prime (256816073) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 170921 + ... + 172416.

It is an arithmetic number, because the mean of its divisors is an integer number (21630294).

Almost surely, 2^256816076 is an apocalyptic number.

It is an amenable number.

256816076 is an abundant number, since it is smaller than the sum of its proper divisors (262310980).

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

256816076 is a wasteful number, since it uses less digits than its factorization.

256816076 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 343369 (or 343367 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 41.

The square root of 256816076 is about 16025.4820832323. The cubic root of 256816076 is about 635.6344133917.

The spelling of 256816076 in words is "two hundred fifty-six million, eight hundred sixteen thousand, seventy-six".