144228 has 48 divisors (see below), whose sum is σ = 411264. Its totient is φ = 38400.

The previous prime is 144223. The next prime is 144241. The reversal of 144228 is 822441.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 144228.

It is not an unprimeable number, because it can be changed into a prime (144223) 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, 1378 + ... + 1478.

It is an arithmetic number, because the mean of its divisors is an integer number (8568).

2¹⁴⁴²²⁸ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 144228, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (205632).

144228 is an abundant number, since it is smaller than the sum of its proper divisors (267036).

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

144228 is a wasteful number, since it uses less digits than its factorization.

144228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132 (or 130 counting only the distinct ones).

The product of its digits is 512, while the sum is 21.

The square root of 144228 is about 379.7736167772. The cubic root of 144228 is about 52.4424766783.

Adding to 144228 its reverse (822441), we get a palindrome (966669).

The spelling of 144228 in words is "one hundred forty-four thousand, two hundred twenty-eight".