284228 has 12 divisors (see below), whose sum is σ = 568512. Its totient is φ = 121800.

The previous prime is 284227. The next prime is 284231. The reversal of 284228 is 822482.

284228 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 284197 and 284206.

It is not an unprimeable number, because it can be changed into a prime (284227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5048 + ... + 5103.

It is an arithmetic number, because the mean of its divisors is an integer number (47376).

2²⁸⁴²²⁸ is an apocalyptic number.

284228 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

284228 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

284228 is a wasteful number, since it uses less digits than its factorization.

284228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10162 (or 10160 counting only the distinct ones).

The product of its digits is 2048, while the sum is 26.

The square root of 284228 is about 533.1303780502. The cubic root of 284228 is about 65.7489698981.

It can be divided in two parts, 284 and 228, that added together give a 9-th power (512 = 2⁹).

The spelling of 284228 in words is "two hundred eighty-four thousand, two hundred twenty-eight".