228322056 has 32 divisors (see below), whose sum is σ = 572025600. Its totient is φ = 75944640.

The previous prime is 228322051. The next prime is 228322091. The reversal of 228322056 is 650223822.

It is a super-2 number, since 2×228322056² = 104261922512134272, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (228322051) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1566 + ... + 21426.

It is an arithmetic number, because the mean of its divisors is an integer number (17875800).

Almost surely, 2^228322056 is an apocalyptic number.

It is an amenable number.

228322056 is an abundant number, since it is smaller than the sum of its proper divisors (343703544).

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

228322056 is a wasteful number, since it uses less digits than its factorization.

228322056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20349 (or 20345 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 30.

The square root of 228322056 is about 15110.3294471034. The cubic root of 228322056 is about 611.1989819455.

Adding to 228322056 its reverse (650223822), we get a palindrome (878545878).

The spelling of 228322056 in words is "two hundred twenty-eight million, three hundred twenty-two thousand, fifty-six".