20444244 has 12 divisors (see below), whose sum is σ = 47703264. Its totient is φ = 6814744.

The previous prime is 20444233. The next prime is 20444257. The reversal of 20444244 is 44244402.

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

It is a super-2 number, since 2×20444244² = 835934225463072, which contains 22 as substring.

It is a congruent number.

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, 851832 + ... + 851855.

It is an arithmetic number, because the mean of its divisors is an integer number (3975272).

Almost surely, 2^20444244 is an apocalyptic number.

It is an amenable number.

20444244 is an abundant number, since it is smaller than the sum of its proper divisors (27259020).

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

20444244 is a wasteful number, since it uses less digits than its factorization.

20444244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1703694 (or 1703692 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 24.

The square root of 20444244 is about 4521.5311565884. The cubic root of 20444244 is about 273.4368350177.

Adding to 20444244 its reverse (44244402), we get a palindrome (64688646).

The spelling of 20444244 in words is "twenty million, four hundred forty-four thousand, two hundred forty-four".