286325856 has 72 divisors (see below), whose sum is σ = 825453720. Its totient is φ = 94127616.

The previous prime is 286325843. The next prime is 286325857. The reversal of 286325856 is 658523682.

286325856 is a `hidden beast` number, since 2 + 8 + 63 + 2 + 585 + 6 = 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 (286325857) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14215 + ... + 27833.

It is an arithmetic number, because the mean of its divisors is an integer number (11464635).

Almost surely, 2^286325856 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 286325856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (412726860).

286325856 is an abundant number, since it is smaller than the sum of its proper divisors (539127864).

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

286325856 is a wasteful number, since it uses less digits than its factorization.

286325856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13708 (or 13697 counting only the distinct ones).

The product of its digits is 691200, while the sum is 45.

The square root of 286325856 is about 16921.1659172765. The cubic root of 286325856 is about 659.1033554157.

The spelling of 286325856 in words is "two hundred eighty-six million, three hundred twenty-five thousand, eight hundred fifty-six".