20450244 has 12 divisors (see below), whose sum is σ = 47717264. Its totient is φ = 6816744.

The previous prime is 20450239. The next prime is 20450263. The reversal of 20450244 is 44205402.

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

It is a self number, because there is not a number n which added to its sum of digits gives 20450244.

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, 852082 + ... + 852105.

Almost surely, 2^20450244 is an apocalyptic number.

It is an amenable number.

20450244 is an abundant number, since it is smaller than the sum of its proper divisors (27267020).

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

20450244 is a wasteful number, since it uses less digits than its factorization.

20450244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1704194 (or 1704192 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 21.

The square root of 20450244 is about 4522.1945999702. The cubic root of 20450244 is about 273.4635819192.

Adding to 20450244 its reverse (44205402), we get a palindrome (64655646).

The spelling of 20450244 in words is "twenty million, four hundred fifty thousand, two hundred forty-four".