228143165 has 16 divisors (see below), whose sum is σ = 294888000. Its totient is φ = 168884352.

The previous prime is 228143129. The next prime is 228143189. The reversal of 228143165 is 561341822.

228143165 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 228143165 - 2⁸ = 228142909 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23840 + ... + 32009.

It is an arithmetic number, because the mean of its divisors is an integer number (18430500).

Almost surely, 2^228143165 is an apocalyptic number.

It is an amenable number.

228143165 is a deficient number, since it is larger than the sum of its proper divisors (66744835).

228143165 is a wasteful number, since it uses less digits than its factorization.

228143165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55916.

The product of its digits is 11520, while the sum is 32.

The square root of 228143165 is about 15104.4087934616. The cubic root of 228143165 is about 611.0393148405.

Adding to 228143165 its reverse (561341822), we get a palindrome (789484987).

The spelling of 228143165 in words is "two hundred twenty-eight million, one hundred forty-three thousand, one hundred sixty-five".