256040966 has 16 divisors (see below), whose sum is σ = 396843648. Its totient is φ = 123768000.

The previous prime is 256040947. The next prime is 256040987. The reversal of 256040966 is 669040652.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 110516 + ... + 112808.

It is an arithmetic number, because the mean of its divisors is an integer number (24802728).

Almost surely, 2^256040966 is an apocalyptic number.

256040966 is a deficient number, since it is larger than the sum of its proper divisors (140802682).

256040966 is a wasteful number, since it uses less digits than its factorization.

256040966 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4127.

The product of its (nonzero) digits is 77760, while the sum is 38.

The square root of 256040966 is about 16001.2801362891. The cubic root of 256040966 is about 634.9942884972.

The spelling of 256040966 in words is "two hundred fifty-six million, forty thousand, nine hundred sixty-six".