2021604244 has 12 divisors (see below), whose sum is σ = 3859426368. Its totient is φ = 918911000.

The previous prime is 2021604227. The next prime is 2021604259. The reversal of 2021604244 is 4424061202.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22972732 + ... + 22972819.

It is an arithmetic number, because the mean of its divisors is an integer number (321618864).

Almost surely, 2^2021604244 is an apocalyptic number.

It is an amenable number.

2021604244 is a deficient number, since it is larger than the sum of its proper divisors (1837822124).

2021604244 is a wasteful number, since it uses less digits than its factorization.

2021604244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45945566 (or 45945564 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 25.

The square root of 2021604244 is about 44962.2535467252. The cubic root of 2021604244 is about 1264.4414191935.

Adding to 2021604244 its reverse (4424061202), we get a palindrome (6445665446).

The spelling of 2021604244 in words is "two billion, twenty-one million, six hundred four thousand, two hundred forty-four".