228474913 has 2 divisors, whose sum is σ = 228474914. Its totient is φ = 228474912.

The previous prime is 228474877. The next prime is 228474923. The reversal of 228474913 is 319474822.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 225840784 + 2634129 = 15028^2 + 1623^2 .

It is a cyclic number.

It is not a de Polignac number, because 228474913 - 2⁹ = 228474401 is a prime.

It is not a weakly prime, because it can be changed into another prime (228474923) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114237456 + 114237457.

It is an arithmetic number, because the mean of its divisors is an integer number (114237457).

Almost surely, 2^228474913 is an apocalyptic number.

It is an amenable number.

228474913 is a deficient number, since it is larger than the sum of its proper divisors (1).

228474913 is an equidigital number, since it uses as much as digits as its factorization.

228474913 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 96768, while the sum is 40.

The square root of 228474913 is about 15115.3866308474. The cubic root of 228474913 is about 611.3353466391.

Subtracting 228474913 from its reverse (319474822), we obtain a palindrome (90999909).

The spelling of 228474913 in words is "two hundred twenty-eight million, four hundred seventy-four thousand, nine hundred thirteen".