228522145272 has 64 divisors (see below), whose sum is σ = 577185916320. Its totient is φ = 75393282048.

The previous prime is 228522145253. The next prime is 228522145273. The reversal of 228522145272 is 272541225822.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228522145273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1004938 + ... + 1211174.

Almost surely, 2^228522145272 is an apocalyptic number.

It is an amenable number.

228522145272 is an abundant number, since it is smaller than the sum of its proper divisors (348663771048).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

228522145272 is a wasteful number, since it uses less digits than its factorization.

228522145272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 206720 (or 206716 counting only the distinct ones).

The product of its digits is 358400, while the sum is 42.

The spelling of 228522145272 in words is "two hundred twenty-eight billion, five hundred twenty-two million, one hundred forty-five thousand, two hundred seventy-two".