3665228 has 24 divisors (see below), whose sum is σ = 7375872. Its totient is φ = 1561104.

The previous prime is 3665227. The next prime is 3665237. The reversal of 3665228 is 8225663.

It is a d-powerful number, because it can be written as 3¹³ + 6³ + 6⁸ + 5⁸ + 2⁷ + 2⁸ + 8² .

It is a junction number, because it is equal to n+sod(n) for n = 3665194 and 3665203.

It is not an unprimeable number, because it can be changed into a prime (3665227) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5951 + ... + 6537.

It is an arithmetic number, because the mean of its divisors is an integer number (307328).

Almost surely, 2^3665228 is an apocalyptic number.

It is an amenable number.

3665228 is an abundant number, since it is smaller than the sum of its proper divisors (3710644).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3665228 is a wasteful number, since it uses less digits than its factorization.

3665228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 821 (or 819 counting only the distinct ones).

The product of its digits is 17280, while the sum is 32.

The square root of 3665228 is about 1914.4785190751. The cubic root of 3665228 is about 154.1819965602.

The spelling of 3665228 in words is "three million, six hundred sixty-five thousand, two hundred twenty-eight".