228724193 has 2 divisors, whose sum is σ = 228724194. Its totient is φ = 228724192.

The previous prime is 228724129. The next prime is 228724201. The reversal of 228724193 is 391427822.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 228372544 + 351649 = 15112^2 + 593^2 .

It is a cyclic number.

It is not a de Polignac number, because 228724193 - 2⁶ = 228724129 is a prime.

It is not a weakly prime, because it can be changed into another prime (228724123) 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 as a sum of consecutive naturals, namely, 114362096 + 114362097.

It is an arithmetic number, because the mean of its divisors is an integer number (114362097).

Almost surely, 2^228724193 is an apocalyptic number.

It is an amenable number.

228724193 is a deficient number, since it is larger than the sum of its proper divisors (1).

228724193 is an equidigital number, since it uses as much as digits as its factorization.

228724193 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 48384, while the sum is 38.

The square root of 228724193 is about 15123.6302850870. The cubic root of 228724193 is about 611.5576004863.

The spelling of 228724193 in words is "two hundred twenty-eight million, seven hundred twenty-four thousand, one hundred ninety-three".