1225228 has 12 divisors (see below), whose sum is σ = 2158912. Its totient is φ = 608400.

The previous prime is 1225223. The next prime is 1225261. The reversal of 1225228 is 8225221.

It is a junction number, because it is equal to n+sod(n) for n = 1225199 and 1225208.

It is not an unprimeable number, because it can be changed into a prime (1225223) 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, 348 + ... + 1603.

2^1225228 is an apocalyptic number.

It is an amenable number.

1225228 is a deficient number, since it is larger than the sum of its proper divisors (933684).

1225228 is a wasteful number, since it uses less digits than its factorization.

1225228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2112 (or 2110 counting only the distinct ones).

The product of its digits is 640, while the sum is 22.

The square root of 1225228 is about 1106.9001761677. The cubic root of 1225228 is about 107.0053859344.

The spelling of 1225228 in words is "one million, two hundred twenty-five thousand, two hundred twenty-eight".