256648286 has 16 divisors (see below), whose sum is σ = 407914704. Its totient is φ = 120687744.

The previous prime is 256648279. The next prime is 256648291. The reversal of 256648286 is 682846652.

256648286 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 256648286.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 90161 + ... + 92963.

It is an arithmetic number, because the mean of its divisors is an integer number (25494669).

Almost surely, 2^256648286 is an apocalyptic number.

256648286 is a deficient number, since it is larger than the sum of its proper divisors (151266418).

256648286 is a wasteful number, since it uses less digits than its factorization.

256648286 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5515.

The product of its digits is 1105920, while the sum is 47.

The square root of 256648286 is about 16020.2461279470. The cubic root of 256648286 is about 635.4959532980.

The spelling of 256648286 in words is "two hundred fifty-six million, six hundred forty-eight thousand, two hundred eighty-six".