256444134 has 8 divisors (see below), whose sum is σ = 512888280. Its totient is φ = 85481376.

The previous prime is 256444117. The next prime is 256444169. The reversal of 256444134 is 431444652.

It is a happy number.

256444134 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.

256444134 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 256444095 and 256444104.

It is a congruent number.

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, 21370339 + ... + 21370350.

It is an arithmetic number, because the mean of its divisors is an integer number (64111035).

Almost surely, 2^256444134 is an apocalyptic number.

256444134 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

256444134 is a wasteful number, since it uses less digits than its factorization.

256444134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42740694.

The product of its digits is 46080, while the sum is 33.

The square root of 256444134 is about 16013.8731729710. The cubic root of 256444134 is about 635.3274059223.

Adding to 256444134 its reverse (431444652), we get a palindrome (687888786).

The spelling of 256444134 in words is "two hundred fifty-six million, four hundred forty-four thousand, one hundred thirty-four".