228144857 has 2 divisors, whose sum is σ = 228144858. Its totient is φ = 228144856.

The previous prime is 228144823. The next prime is 228144871. The reversal of 228144857 is 758441822.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 181413961 + 46730896 = 13469^2 + 6836^2 .

It is a cyclic number.

It is not a de Polignac number, because 228144857 - 2⁸ = 228144601 is a prime.

It is not a weakly prime, because it can be changed into another prime (228144817) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114072428 + 114072429.

It is an arithmetic number, because the mean of its divisors is an integer number (114072429).

Almost surely, 2^228144857 is an apocalyptic number.

It is an amenable number.

228144857 is a deficient number, since it is larger than the sum of its proper divisors (1).

228144857 is an equidigital number, since it uses as much as digits as its factorization.

228144857 is an evil number, because the sum of its binary digits is even.

The product of its digits is 143360, while the sum is 41.

The square root of 228144857 is about 15104.4648034944. The cubic root of 228144857 is about 611.0408254066.

The spelling of 228144857 in words is "two hundred twenty-eight million, one hundred forty-four thousand, eight hundred fifty-seven".