3644128 has 24 divisors (see below), whose sum is σ = 7218288. Its totient is φ = 1810944.

The previous prime is 3644117. The next prime is 3644129. The reversal of 3644128 is 8214463.

It is a junction number, because it is equal to n+sod(n) for n = 3644096 and 3644105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3644129) 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, 8200 + ... + 8632.

It is an arithmetic number, because the mean of its divisors is an integer number (300762).

Almost surely, 2^3644128 is an apocalyptic number.

It is an amenable number.

3644128 is a deficient number, since it is larger than the sum of its proper divisors (3574160).

3644128 is a wasteful number, since it uses less digits than its factorization.

3644128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 706 (or 698 counting only the distinct ones).

The product of its digits is 4608, while the sum is 28.

The square root of 3644128 is about 1908.9599262426. The cubic root of 3644128 is about 153.8855618022.

The spelling of 3644128 in words is "three million, six hundred forty-four thousand, one hundred twenty-eight".