256144 has 20 divisors (see below), whose sum is σ = 567424. Its totient is φ = 109728.

The previous prime is 256133. The next prime is 256147. The reversal of 256144 is 441652.

It is a nialpdrome in base 8.

It is not an unprimeable number, because it can be changed into a prime (256147) by changing a digit.

256144 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1032 + ... + 1255.

2²⁵⁶¹⁴⁴ is an apocalyptic number.

It is an amenable number.

256144 is an abundant number, since it is smaller than the sum of its proper divisors (311280).

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

256144 is a wasteful number, since it uses less digits than its factorization.

256144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2302 (or 2296 counting only the distinct ones).

The product of its digits is 960, while the sum is 22.

The square root of 256144 is about 506.1067081160. The cubic root of 256144 is about 63.5079453550.

Adding to 256144 its reverse (441652), we get a palindrome (697796).

It can be divided in two parts, 256 and 144, that multiplied together give a square (36864 = 192²).

The spelling of 256144 in words is "two hundred fifty-six thousand, one hundred forty-four".