2133644 has 12 divisors (see below), whose sum is σ = 3785544. Its totient is φ = 1052064.

The previous prime is 2133631. The next prime is 2133647. The reversal of 2133644 is 4463312.

It is a happy number.

2133644 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (2133647) 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, 3362 + ... + 3945.

It is an arithmetic number, because the mean of its divisors is an integer number (315462).

2^2133644 is an apocalyptic number.

It is an amenable number.

2133644 is a deficient number, since it is larger than the sum of its proper divisors (1651900).

2133644 is a wasteful number, since it uses less digits than its factorization.

2133644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7384 (or 7382 counting only the distinct ones).

The product of its digits is 1728, while the sum is 23.

The square root of 2133644 is about 1460.6998322722. The cubic root of 2133644 is about 128.7381665060.

Adding to 2133644 its reverse (4463312), we get a palindrome (6596956).

The spelling of 2133644 in words is "two million, one hundred thirty-three thousand, six hundred forty-four".