2128444 has 12 divisors (see below), whose sum is σ = 3760344. Its totient is φ = 1054064.

The previous prime is 2128439. The next prime is 2128447. The reversal of 2128444 is 4448212.

It is a super-2 number, since 2×2128444² = 9060547722272, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2128447) 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, 2059 + ... + 2914.

It is an arithmetic number, because the mean of its divisors is an integer number (313362).

2^2128444 is an apocalyptic number.

It is an amenable number.

2128444 is a deficient number, since it is larger than the sum of its proper divisors (1631900).

2128444 is a wasteful number, since it uses less digits than its factorization.

2128444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5084 (or 5082 counting only the distinct ones).

The product of its digits is 2048, while the sum is 25.

The square root of 2128444 is about 1458.9187777255. The cubic root of 2128444 is about 128.6334968980.

The spelling of 2128444 in words is "two million, one hundred twenty-eight thousand, four hundred forty-four".