3685228 has 12 divisors (see below), whose sum is σ = 6472312. Its totient is φ = 1836000.

The previous prime is 3685219. The next prime is 3685247. The reversal of 3685228 is 8225863.

It is a junction number, because it is equal to n+sod(n) for n = 3685193 and 3685202.

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, 273 + ... + 2728.

Almost surely, 2^3685228 is an apocalyptic number.

It is an amenable number.

3685228 is a deficient number, since it is larger than the sum of its proper divisors (2787084).

3685228 is a wasteful number, since it uses less digits than its factorization.

3685228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3312 (or 3310 counting only the distinct ones).

The product of its digits is 23040, while the sum is 34.

The square root of 3685228 is about 1919.6947674044. The cubic root of 3685228 is about 154.4619289458.

It can be divided in two parts, 36 and 85228, that added together give a square (85264 = 292²).

The spelling of 3685228 in words is "three million, six hundred eighty-five thousand, two hundred twenty-eight".