20650244 has 6 divisors (see below), whose sum is σ = 36137934. Its totient is φ = 10325120.

The previous prime is 20650237. The next prime is 20650303. The reversal of 20650244 is 44205602.

It can be written as a sum of positive squares in only one way, i.e., 17960644 + 2689600 = 4238^2 + 1640^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2581277 + ... + 2581284.

It is an arithmetic number, because the mean of its divisors is an integer number (6022989).

Almost surely, 2^20650244 is an apocalyptic number.

It is an amenable number.

20650244 is a deficient number, since it is larger than the sum of its proper divisors (15487690).

20650244 is a wasteful number, since it uses less digits than its factorization.

20650244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5162565 (or 5162563 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 20650244 is about 4544.2539541711. The cubic root of 20650244 is about 274.3521676266.

Adding to 20650244 its reverse (44205602), we get a palindrome (64855846).

The spelling of 20650244 in words is "twenty million, six hundred fifty thousand, two hundred forty-four".