2021444 has 12 divisors (see below), whose sum is σ = 3571344. Its totient is φ = 1001064.

The previous prime is 2021431. The next prime is 2021471. The reversal of 2021444 is 4441202.

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, 1934 + ... + 2789.

It is an arithmetic number, because the mean of its divisors is an integer number (297612).

2^2021444 is an apocalyptic number.

It is an amenable number.

2021444 is a deficient number, since it is larger than the sum of its proper divisors (1549900).

2021444 is a wasteful number, since it uses less digits than its factorization.

2021444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4834 (or 4832 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 17.

The square root of 2021444 is about 1421.7749470292. The cubic root of 2021444 is about 126.4408009340.

Adding to 2021444 its reverse (4441202), we get a palindrome (6462646).

The spelling of 2021444 in words is "two million, twenty-one thousand, four hundred forty-four".