286144228 has 12 divisors (see below), whose sum is σ = 504408492. Its totient is φ = 142027520.

The previous prime is 286144213. The next prime is 286144253. The reversal of 286144228 is 822441682.

It can be written as a sum of positive squares in 2 ways, for example, as 86713344 + 199430884 = 9312^2 + 14122^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 260533 + ... + 261628.

It is an arithmetic number, because the mean of its divisors is an integer number (42034041).

Almost surely, 2^286144228 is an apocalyptic number.

It is an amenable number.

286144228 is a deficient number, since it is larger than the sum of its proper divisors (218264264).

286144228 is a wasteful number, since it uses less digits than its factorization.

286144228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 522302 (or 522300 counting only the distinct ones).

The product of its digits is 49152, while the sum is 37.

The square root of 286144228 is about 16915.7981780346. The cubic root of 286144228 is about 658.9639606862.

It can be divided in two parts, 2861 and 44228, that added together give a square (47089 = 217²).

The spelling of 286144228 in words is "two hundred eighty-six million, one hundred forty-four thousand, two hundred twenty-eight".