228162265 has 16 divisors (see below), whose sum is σ = 279888336. Its totient is φ = 178502400.

The previous prime is 228162223. The next prime is 228162271. The reversal of 228162265 is 562261822.

It can be written as a sum of positive squares in 8 ways, for example, as 70207641 + 157954624 = 8379^2 + 12568^2 .

It is not a de Polignac number, because 228162265 - 2²³ = 219773657 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 228162265.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 53139 + ... + 57271.

It is an arithmetic number, because the mean of its divisors is an integer number (17493021).

Almost surely, 2^228162265 is an apocalyptic number.

It is an amenable number.

228162265 is a deficient number, since it is larger than the sum of its proper divisors (51726071).

228162265 is a wasteful number, since it uses less digits than its factorization.

228162265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4380.

The product of its digits is 23040, while the sum is 34.

The square root of 228162265 is about 15105.0410459555. The cubic root of 228162265 is about 611.0563663050.

It can be divided in two parts, 2281 and 62265, that added together give a palindrome (64546).

The spelling of 228162265 in words is "two hundred twenty-eight million, one hundred sixty-two thousand, two hundred sixty-five".