256041867 has 8 divisors (see below), whose sum is σ = 343484224. Its totient is φ = 169647048.

The previous prime is 256041857. The next prime is 256041869. The reversal of 256041867 is 768140652.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 256041867 - 2¹⁰ = 256040843 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (256041869) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 261313 + ... + 262290.

It is an arithmetic number, because the mean of its divisors is an integer number (42935528).

Almost surely, 2^256041867 is an apocalyptic number.

256041867 is a deficient number, since it is larger than the sum of its proper divisors (87442357).

256041867 is a wasteful number, since it uses less digits than its factorization.

256041867 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 523769.

The product of its (nonzero) digits is 80640, while the sum is 39.

The square root of 256041867 is about 16001.3082902618. The cubic root of 256041867 is about 634.9950333379.

The spelling of 256041867 in words is "two hundred fifty-six million, forty-one thousand, eight hundred sixty-seven".