228144169 has 6 divisors (see below), whose sum is σ = 250770170. Its totient is φ = 207403680.

The previous prime is 228144151. The next prime is 228144173. The reversal of 228144169 is 961441822.

It can be written as a sum of positive squares in only one way, i.e., 201980944 + 26163225 = 14212^2 + 5115^2 .

It is not a de Polignac number, because 228144169 - 2⁷ = 228144041 is a prime.

It is a super-2 number, since 2×228144169² = 104099523697401122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (228144139) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 942624 + ... + 942865.

Almost surely, 2^228144169 is an apocalyptic number.

It is an amenable number.

228144169 is a deficient number, since it is larger than the sum of its proper divisors (22626001).

228144169 is a wasteful number, since it uses less digits than its factorization.

228144169 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1885511 (or 1885500 counting only the distinct ones).

The product of its digits is 27648, while the sum is 37.

The square root of 228144169 is about 15104.4420287543. The cubic root of 228144169 is about 611.0402111821.

The spelling of 228144169 in words is "two hundred twenty-eight million, one hundred forty-four thousand, one hundred sixty-nine".