228047173 has 2 divisors, whose sum is σ = 228047174. Its totient is φ = 228047172.

The previous prime is 228047161. The next prime is 228047227. The reversal of 228047173 is 371740822.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 176810209 + 51236964 = 13297^2 + 7158^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-228047173 is a prime.

It is a super-2 number, since 2×228047173² = 104011026226583858, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (228047273) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114023586 + 114023587.

It is an arithmetic number, because the mean of its divisors is an integer number (114023587).

Almost surely, 2^228047173 is an apocalyptic number.

It is an amenable number.

228047173 is a deficient number, since it is larger than the sum of its proper divisors (1).

228047173 is an equidigital number, since it uses as much as digits as its factorization.

228047173 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18816, while the sum is 34.

The square root of 228047173 is about 15101.2308438749. The cubic root of 228047173 is about 610.9536038730.

Adding to 228047173 its reverse (371740822), we get a palindrome (599787995).

The spelling of 228047173 in words is "two hundred twenty-eight million, forty-seven thousand, one hundred seventy-three".