228444 has 12 divisors (see below), whose sum is σ = 533064. Its totient is φ = 76144.

The previous prime is 228443. The next prime is 228451. The reversal of 228444 is 444822.

228444 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×228444² = 104373322272, which contains 22 as substring.

228444 is a modest number, since divided by 444 gives 228 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228443) 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 3 ways as a sum of consecutive naturals, for example, 9507 + ... + 9530.

It is an arithmetic number, because the mean of its divisors is an integer number (44422).

2²²⁸⁴⁴⁴ is an apocalyptic number.

It is an amenable number.

228444 is an abundant number, since it is smaller than the sum of its proper divisors (304620).

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

228444 is a wasteful number, since it uses less digits than its factorization.

228444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19044 (or 19042 counting only the distinct ones).

The product of its digits is 2048, while the sum is 24.

The square root of 228444 is about 477.9581571644. The cubic root of 228444 is about 61.1307773864.

The spelling of 228444 in words is "two hundred twenty-eight thousand, four hundred forty-four".