860256 has 72 divisors (see below), whose sum is σ = 2555280. Its totient is φ = 274176.

The previous prime is 860239. The next prime is 860257. The reversal of 860256 is 652068.

860256 is a `hidden beast` number, since 8 + 602 + 56 = 666.

It is a tau number, because it is divible by the number of its divisors (72).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (860257) by changing a digit.

860256 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 11 ways as a sum of consecutive naturals, for example, 8301 + ... + 8403.

It is an arithmetic number, because the mean of its divisors is an integer number (35490).

2⁸⁶⁰²⁵⁶ is an apocalyptic number.

It is a pronic number, being equal to 927×928.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 860256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1277640).

860256 is an abundant number, since it is smaller than the sum of its proper divisors (1695024).

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

860256 is a wasteful number, since it uses less digits than its factorization.

860256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148 (or 137 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 860256 is about 927.4998652291. The cubic root of 860256 is about 95.1062891614.

The spelling of 860256 in words is "eight hundred sixty thousand, two hundred fifty-six".