2133444 has 12 divisors (see below), whose sum is σ = 4978064. Its totient is φ = 711144.

The previous prime is 2133433. The next prime is 2133463. The reversal of 2133444 is 4443312.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×2133444² = 9103166602272, which contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 2133444.

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, 88882 + ... + 88905.

2^2133444 is an apocalyptic number.

It is an amenable number.

2133444 is an abundant number, since it is smaller than the sum of its proper divisors (2844620).

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

2133444 is a wasteful number, since it uses less digits than its factorization.

2133444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 177794 (or 177792 counting only the distinct ones).

The product of its digits is 1152, while the sum is 21.

The square root of 2133444 is about 1460.6313703327. The cubic root of 2133444 is about 128.7341438983.

Adding to 2133444 its reverse (4443312), we get a palindrome (6576756).

The spelling of 2133444 in words is "two million, one hundred thirty-three thousand, four hundred forty-four".