228133269 has 54 divisors (see below), whose sum is σ = 415216386. Its totient is φ = 120294720.

The previous prime is 228133267. The next prime is 228133303. The reversal of 228133269 is 962331822.

It can be written as a sum of positive squares in 3 ways, for example, as 18173169 + 209960100 = 4263^2 + 14490^2 .

It is not a de Polignac number, because 228133269 - 2¹ = 228133267 is a prime.

It is a super-2 number, since 2×228133269² = 104089576849252722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228133267) 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 in 53 ways as a sum of consecutive naturals, for example, 72999 + ... + 76059.

Almost surely, 2^228133269 is an apocalyptic number.

It is an amenable number.

228133269 is a deficient number, since it is larger than the sum of its proper divisors (187083117).

228133269 is a wasteful number, since it uses less digits than its factorization.

228133269 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3107 (or 3084 counting only the distinct ones).

The product of its digits is 31104, while the sum is 36.

The square root of 228133269 is about 15104.0812034364. The cubic root of 228133269 is about 611.0304798436.

The spelling of 228133269 in words is "two hundred twenty-eight million, one hundred thirty-three thousand, two hundred sixty-nine".