256072776 has 16 divisors (see below), whose sum is σ = 640182000. Its totient is φ = 85357584.

The previous prime is 256072769. The next prime is 256072787. The reversal of 256072776 is 677270652.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5334826 + ... + 5334873.

It is an arithmetic number, because the mean of its divisors is an integer number (40011375).

Almost surely, 2^256072776 is an apocalyptic number.

It is an amenable number.

256072776 is an abundant number, since it is smaller than the sum of its proper divisors (384109224).

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

256072776 is a wasteful number, since it uses less digits than its factorization.

256072776 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10669708 (or 10669704 counting only the distinct ones).

The product of its (nonzero) digits is 246960, while the sum is 42.

The square root of 256072776 is about 16002.2740883913. The cubic root of 256072776 is about 635.0205842006.

The spelling of 256072776 in words is "two hundred fifty-six million, seventy-two thousand, seven hundred seventy-six".