256400226 has 24 divisors (see below), whose sum is σ = 556657920. Its totient is φ = 85293816.

The previous prime is 256400201. The next prime is 256400257. The reversal of 256400226 is 622004652.

256400226 is a `hidden beast` number, since 256 + 400 + 2 + 2 + 6 = 666.

256400226 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 256400226.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5106 + ... + 23213.

It is an arithmetic number, because the mean of its divisors is an integer number (23194080).

Almost surely, 2^256400226 is an apocalyptic number.

256400226 is an abundant number, since it is smaller than the sum of its proper divisors (300257694).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

256400226 is a wasteful number, since it uses less digits than its factorization.

256400226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28830 (or 28827 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The square root of 256400226 is about 16012.5021779858. The cubic root of 256400226 is about 635.2911439010.

Adding to 256400226 its reverse (622004652), we get a palindrome (878404878).

The spelling of 256400226 in words is "two hundred fifty-six million, four hundred thousand, two hundred twenty-six".