398230628 has 12 divisors (see below), whose sum is σ = 703297980. Its totient is φ = 197288352.

The previous prime is 398230601. The next prime is 398230669. The reversal of 398230628 is 826032893.

It can be written as a sum of positive squares in 2 ways, for example, as 146119744 + 252110884 = 12088^2 + 15878^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 456251 + ... + 457122.

It is an arithmetic number, because the mean of its divisors is an integer number (58608165).

Almost surely, 2^398230628 is an apocalyptic number.

It is an amenable number.

398230628 is a deficient number, since it is larger than the sum of its proper divisors (305067352).

398230628 is a wasteful number, since it uses less digits than its factorization.

398230628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 913486 (or 913484 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 41.

The square root of 398230628 is about 19955.7166746775. The cubic root of 398230628 is about 735.7182902062.

The spelling of 398230628 in words is "three hundred ninety-eight million, two hundred thirty thousand, six hundred twenty-eight".