183220228 has 12 divisors (see below), whose sum is σ = 320982732. Its totient is φ = 91510880.

The previous prime is 183220187. The next prime is 183220243. The reversal of 183220228 is 822022381.

It can be written as a sum of positive squares in 2 ways, for example, as 107495424 + 75724804 = 10368^2 + 8702^2 .

It is a junction number, because it is equal to n+sod(n) for n = 183220196 and 183220205.

It is an unprimeable number.

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, 20575 + ... + 28102.

It is an arithmetic number, because the mean of its divisors is an integer number (26748561).

Almost surely, 2^183220228 is an apocalyptic number.

It is an amenable number.

183220228 is a deficient number, since it is larger than the sum of its proper divisors (137762504).

183220228 is a wasteful number, since it uses less digits than its factorization.

183220228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49622 (or 49620 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 28.

The square root of 183220228 is about 13535.8866721024. The cubic root of 183220228 is about 567.9687916795.

The spelling of 183220228 in words is "one hundred eighty-three million, two hundred twenty thousand, two hundred twenty-eight".