228646288 has 20 divisors (see below), whose sum is σ = 477079708. Its totient is φ = 105528960.

The previous prime is 228646283. The next prime is 228646321. The reversal of 228646288 is 882646822.

It can be written as a sum of positive squares in 2 ways, for example, as 77651344 + 150994944 = 8812^2 + 12288^2 .

It is not an unprimeable number, because it can be changed into a prime (228646283) 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 3 ways as a sum of consecutive naturals, for example, 549423 + ... + 549838.

Almost surely, 2^228646288 is an apocalyptic number.

It is an amenable number.

228646288 is an abundant number, since it is smaller than the sum of its proper divisors (248433420).

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

228646288 is a wasteful number, since it uses less digits than its factorization.

228646288 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1099282 (or 1099276 counting only the distinct ones).

The product of its digits is 589824, while the sum is 46.

The square root of 228646288 is about 15121.0544605857. The cubic root of 228646288 is about 611.4881590563.

The spelling of 228646288 in words is "two hundred twenty-eight million, six hundred forty-six thousand, two hundred eighty-eight".