844228 has 24 divisors (see below), whose sum is σ = 1842624. Its totient is φ = 328800.

The previous prime is 844201. The next prime is 844243. The reversal of 844228 is 822448.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a junction number, because it is equal to n+sod(n) for n = 844196 and 844205.

It is a congruent number.

It is an unprimeable number.

844228 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 7 ways as a sum of consecutive naturals, for example, 1063 + ... + 1678.

It is an arithmetic number, because the mean of its divisors is an integer number (76776).

2⁸⁴⁴²²⁸ is an apocalyptic number.

It is an amenable number.

844228 is an abundant number, since it is smaller than the sum of its proper divisors (998396).

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

844228 is a wasteful number, since it uses less digits than its factorization.

844228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2763 (or 2761 counting only the distinct ones).

The product of its digits is 4096, while the sum is 28.

The square root of 844228 is about 918.8188069473. The cubic root of 844228 is about 94.5119195886.

The spelling of 844228 in words is "eight hundred forty-four thousand, two hundred twenty-eight".