228144444 has 48 divisors (see below), whose sum is σ = 582132096. Its totient is φ = 68968000.

The previous prime is 228144443. The next prime is 228144461. The reversal of 228144444 is 444441822.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228144443) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 59794 + ... + 63494.

It is an arithmetic number, because the mean of its divisors is an integer number (12127752).

Almost surely, 2^228144444 is an apocalyptic number.

It is an amenable number.

228144444 is an abundant number, since it is smaller than the sum of its proper divisors (353987652).

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

228144444 is a wasteful number, since it uses less digits than its factorization.

228144444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4186 (or 4184 counting only the distinct ones).

The product of its digits is 32768, while the sum is 33.

The square root of 228144444 is about 15104.4511320339. The cubic root of 228144444 is about 611.0404566935.

The spelling of 228144444 in words is "two hundred twenty-eight million, one hundred forty-four thousand, four hundred forty-four".