228335144 has 32 divisors (see below), whose sum is σ = 434012040. Its totient is φ = 112608000.

The previous prime is 228335137. The next prime is 228335147. The reversal of 228335144 is 441533822.

It can be written as a sum of positive squares in 4 ways, for example, as 164814244 + 63520900 = 12838^2 + 7970^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 228335144.

It is not an unprimeable number, because it can be changed into a prime (228335147) 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 7 ways as a sum of consecutive naturals, for example, 372182 + ... + 372794.

Almost surely, 2^228335144 is an apocalyptic number.

It is an amenable number.

228335144 is a deficient number, since it is larger than the sum of its proper divisors (205676896).

228335144 is a wasteful number, since it uses less digits than its factorization.

228335144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1181 (or 1177 counting only the distinct ones).

The product of its digits is 23040, while the sum is 32.

The square root of 228335144 is about 15110.7625221231. The cubic root of 228335144 is about 611.2106602149.

Adding to 228335144 its reverse (441533822), we get a palindrome (669868966).

The spelling of 228335144 in words is "two hundred twenty-eight million, three hundred thirty-five thousand, one hundred forty-four".