20244244 has 6 divisors (see below), whose sum is σ = 35427434. Its totient is φ = 10122120.

The previous prime is 20244239. The next prime is 20244247. The reversal of 20244244 is 44244202.

It can be written as a sum of positive squares in only one way, i.e., 17139600 + 3104644 = 4140^2 + 1762^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20244247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2530527 + ... + 2530534.

Almost surely, 2^20244244 is an apocalyptic number.

It is an amenable number.

20244244 is a deficient number, since it is larger than the sum of its proper divisors (15183190).

20244244 is a wasteful number, since it uses less digits than its factorization.

20244244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5061065 (or 5061063 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 22.

The square root of 20244244 is about 4499.3603989901. The cubic root of 20244244 is about 272.5422609315.

Adding to 20244244 its reverse (44244202), we get a palindrome (64488446).

The spelling of 20244244 in words is "twenty million, two hundred forty-four thousand, two hundred forty-four".