3644228 has 18 divisors (see below), whose sum is σ = 7419006. Its totient is φ = 1561728.

The previous prime is 3644213. The next prime is 3644231. The reversal of 3644228 is 8224463.

It can be written as a sum of positive squares in only one way, i.e., 3211264 + 432964 = 1792^2 + 658^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 3644228.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 9101 + ... + 9492.

It is an arithmetic number, because the mean of its divisors is an integer number (412167).

Almost surely, 2^3644228 is an apocalyptic number.

It is an amenable number.

3644228 is an abundant number, since it is smaller than the sum of its proper divisors (3774778).

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

3644228 is a wasteful number, since it uses less digits than its factorization.

3644228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18611 (or 18602 counting only the distinct ones).

The product of its digits is 9216, while the sum is 29.

The square root of 3644228 is about 1908.9861183361. The cubic root of 3644228 is about 153.8869694014.

The spelling of 3644228 in words is "three million, six hundred forty-four thousand, two hundred twenty-eight".