228182265 has 20 divisors (see below), whose sum is σ = 409038564. Its totient is φ = 121696992.

The previous prime is 228182263. The next prime is 228182303. The reversal of 228182265 is 562281822.

It can be written as a sum of positive squares in 2 ways, for example, as 145226601 + 82955664 = 12051^2 + 9108^2 .

It is not a de Polignac number, because 228182265 - 2¹ = 228182263 is a prime.

It is not an unprimeable number, because it can be changed into a prime (228182263) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 281302 + ... + 282111.

Almost surely, 2^228182265 is an apocalyptic number.

It is an amenable number.

228182265 is a deficient number, since it is larger than the sum of its proper divisors (180856299).

228182265 is an equidigital number, since it uses as much as digits as its factorization.

228182265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 563430 (or 563421 counting only the distinct ones).

The product of its digits is 30720, while the sum is 36.

The square root of 228182265 is about 15105.7030620888. The cubic root of 228182265 is about 611.0742202218.

The spelling of 228182265 in words is "two hundred twenty-eight million, one hundred eighty-two thousand, two hundred sixty-five".