398123228 has 12 divisors (see below), whose sum is σ = 699307560. Its totient is φ = 198321072.

The previous prime is 398123213. The next prime is 398123251. The reversal of 398123228 is 822321893.

It is a junction number, because it is equal to n+sod(n) for n = 398123191 and 398123200.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 183926 + ... + 186077.

It is an arithmetic number, because the mean of its divisors is an integer number (58275630).

Almost surely, 2^398123228 is an apocalyptic number.

It is an amenable number.

398123228 is a deficient number, since it is larger than the sum of its proper divisors (301184332).

398123228 is a wasteful number, since it uses less digits than its factorization.

398123228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 370276 (or 370274 counting only the distinct ones).

The product of its digits is 41472, while the sum is 38.

The square root of 398123228 is about 19953.0255349909. The cubic root of 398123228 is about 735.6521449098.

The spelling of 398123228 in words is "three hundred ninety-eight million, one hundred twenty-three thousand, two hundred twenty-eight".