256223386 has 8 divisors (see below), whose sum is σ = 389200320. Its totient is φ = 126489948.

The previous prime is 256223347. The next prime is 256223393. The reversal of 256223386 is 683322652.

256223386 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 810676 + ... + 810991.

It is an arithmetic number, because the mean of its divisors is an integer number (48650040).

Almost surely, 2^256223386 is an apocalyptic number.

256223386 is a deficient number, since it is larger than the sum of its proper divisors (132976934).

256223386 is a wasteful number, since it uses less digits than its factorization.

256223386 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1621748.

The product of its digits is 103680, while the sum is 37.

The square root of 256223386 is about 16006.9792902971. The cubic root of 256223386 is about 635.1450562451.

The spelling of 256223386 in words is "two hundred fifty-six million, two hundred twenty-three thousand, three hundred eighty-six".