252281228 has 12 divisors (see below), whose sum is σ = 441672000. Its totient is φ = 126089232.

The previous prime is 252281203. The next prime is 252281231. The reversal of 252281228 is 822182252.

It is a junction number, because it is equal to n+sod(n) for n = 252281194 and 252281203.

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 3 ways as a sum of consecutive naturals, for example, 476 + ... + 22467.

It is an arithmetic number, because the mean of its divisors is an integer number (36806000).

Almost surely, 2^252281228 is an apocalyptic number.

It is an amenable number.

252281228 is a deficient number, since it is larger than the sum of its proper divisors (189390772).

252281228 is a wasteful number, since it uses less digits than its factorization.

252281228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25696 (or 25694 counting only the distinct ones).

The product of its digits is 10240, while the sum is 32.

The square root of 252281228 is about 15883.3632458620. The cubic root of 252281228 is about 631.8708376490.

The spelling of 252281228 in words is "two hundred fifty-two million, two hundred eighty-one thousand, two hundred twenty-eight".