228144871 has 2 divisors, whose sum is σ = 228144872. Its totient is φ = 228144870.

The previous prime is 228144857. The next prime is 228144893. The reversal of 228144871 is 178441822.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 228144871 - 2⁹ = 228144359 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 228144871.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (228144071) by changing a digit.

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 as a sum of consecutive naturals, namely, 114072435 + 114072436.

It is an arithmetic number, because the mean of its divisors is an integer number (114072436).

Almost surely, 2^228144871 is an apocalyptic number.

228144871 is a deficient number, since it is larger than the sum of its proper divisors (1).

228144871 is an equidigital number, since it uses as much as digits as its factorization.

228144871 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 28672, while the sum is 37.

The square root of 228144871 is about 15104.4652669335. The cubic root of 228144871 is about 611.0408379053.

The spelling of 228144871 in words is "two hundred twenty-eight million, one hundred forty-four thousand, eight hundred seventy-one".