256448879 has 8 divisors (see below), whose sum is σ = 257992128. Its totient is φ = 254910880.

The previous prime is 256448851. The next prime is 256448897. The reversal of 256448879 is 978844652.

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

It is a cyclic number.

It is not a de Polignac number, because 256448879 - 2⁸ = 256448623 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 256448879.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256448839) 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, 135689 + ... + 137565.

It is an arithmetic number, because the mean of its divisors is an integer number (32249016).

Almost surely, 2^256448879 is an apocalyptic number.

256448879 is a deficient number, since it is larger than the sum of its proper divisors (1543249).

256448879 is a wasteful number, since it uses less digits than its factorization.

256448879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2625.

The product of its digits is 3870720, while the sum is 53.

The square root of 256448879 is about 16014.0213250763. The cubic root of 256448879 is about 635.3313243976.

The spelling of 256448879 in words is "two hundred fifty-six million, four hundred forty-eight thousand, eight hundred seventy-nine".