228144165 has 32 divisors (see below), whose sum is σ = 388717056. Its totient is φ = 113863680.

The previous prime is 228144151. The next prime is 228144173. The reversal of 228144165 is 561441822.

It is a happy number.

It is not a de Polignac number, because 228144165 - 2⁹ = 228143653 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 43684 + ... + 48626.

It is an arithmetic number, because the mean of its divisors is an integer number (12147408).

Almost surely, 2^228144165 is an apocalyptic number.

It is an amenable number.

228144165 is a deficient number, since it is larger than the sum of its proper divisors (160572891).

228144165 is a wasteful number, since it uses less digits than its factorization.

228144165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5149.

The product of its digits is 15360, while the sum is 33.

The square root of 228144165 is about 15104.4418963429. The cubic root of 228144165 is about 611.0402076110.

Adding to 228144165 its reverse (561441822), we get a palindrome (789585987).

The spelling of 228144165 in words is "two hundred twenty-eight million, one hundred forty-four thousand, one hundred sixty-five".