397228 has 12 divisors (see below), whose sum is σ = 748720. Its totient is φ = 183312.

The previous prime is 397223. The next prime is 397237. The reversal of 397228 is 822793.

397228 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 397228.

It is not an unprimeable number, because it can be changed into a prime (397223) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3768 + ... + 3871.

2³⁹⁷²²⁸ is an apocalyptic number.

It is an amenable number.

397228 is a deficient number, since it is larger than the sum of its proper divisors (351492).

397228 is a wasteful number, since it uses less digits than its factorization.

397228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7656 (or 7654 counting only the distinct ones).

The product of its digits is 6048, while the sum is 31.

The square root of 397228 is about 630.2602637006. The cubic root of 397228 is about 73.5100330296.

It can be divided in two parts, 397 and 228, that added together give a 4-th power (625 = 5⁴).

The spelling of 397228 in words is "three hundred ninety-seven thousand, two hundred twenty-eight".