256072 has 8 divisors (see below), whose sum is σ = 480150. Its totient is φ = 128032.

The previous prime is 256057. The next prime is 256079. The reversal of 256072 is 270652.

It can be written as a sum of positive squares in only one way, i.e., 256036 + 36 = 506^2 + 6^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a nialpdrome in base 8.

It is not an unprimeable number, because it can be changed into a prime (256079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15997 + ... + 16012.

2²⁵⁶⁰⁷² is an apocalyptic number.

It is an amenable number.

256072 is a deficient number, since it is larger than the sum of its proper divisors (224078).

256072 is a wasteful number, since it uses less digits than its factorization.

256072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32015 (or 32011 counting only the distinct ones).

The product of its (nonzero) digits is 840, while the sum is 22.

The square root of 256072 is about 506.0355718722. The cubic root of 256072 is about 63.5019942747.

The spelling of 256072 in words is "two hundred fifty-six thousand, seventy-two".