256772 has 12 divisors (see below), whose sum is σ = 469056. Its totient is φ = 122760.

The previous prime is 256771. The next prime is 256799. The reversal of 256772 is 277652.

It is a happy number.

256772 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (256771) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1304 + ... + 1487.

It is an arithmetic number, because the mean of its divisors is an integer number (39088).

2²⁵⁶⁷⁷² is an apocalyptic number.

It is an amenable number.

256772 is a deficient number, since it is larger than the sum of its proper divisors (212284).

256772 is a wasteful number, since it uses less digits than its factorization.

256772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2818 (or 2816 counting only the distinct ones).

The product of its digits is 5880, while the sum is 29.

The square root of 256772 is about 506.7267508234. The cubic root of 256772 is about 63.5598047775.

The spelling of 256772 in words is "two hundred fifty-six thousand, seven hundred seventy-two".