228145144 has 32 divisors (see below), whose sum is σ = 438681600. Its totient is φ = 111183840.

The previous prime is 228145123. The next prime is 228145187. The reversal of 228145144 is 441541822.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 100777 + ... + 103015.

It is an arithmetic number, because the mean of its divisors is an integer number (13708800).

Almost surely, 2^228145144 is an apocalyptic number.

It is an amenable number.

228145144 is a deficient number, since it is larger than the sum of its proper divisors (210536456).

228145144 is a wasteful number, since it uses less digits than its factorization.

228145144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2563 (or 2559 counting only the distinct ones).

The product of its digits is 10240, while the sum is 31.

The square root of 228145144 is about 15104.4743039935. The cubic root of 228145144 is about 611.0410816307.

Adding to 228145144 its reverse (441541822), we get a palindrome (669686966).

The spelling of 228145144 in words is "two hundred twenty-eight million, one hundred forty-five thousand, one hundred forty-four".