252220228 has 24 divisors (see below), whose sum is σ = 503300952. Its totient is φ = 109561344.

The previous prime is 252220217. The next prime is 252220249. The reversal of 252220228 is 822022252.

It can be written as a sum of positive squares in 4 ways, for example, as 80138304 + 172081924 = 8952^2 + 13118^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 141775 + ... + 143542.

It is an arithmetic number, because the mean of its divisors is an integer number (20970873).

Almost surely, 2^252220228 is an apocalyptic number.

It is an amenable number.

252220228 is a deficient number, since it is larger than the sum of its proper divisors (251080724).

252220228 is a wasteful number, since it uses less digits than its factorization.

252220228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 285351 (or 285349 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 25.

The square root of 252220228 is about 15881.4428815520. The cubic root of 252220228 is about 631.8199060909.

The spelling of 252220228 in words is "two hundred fifty-two million, two hundred twenty thousand, two hundred twenty-eight".