20422244 has 6 divisors (see below), whose sum is σ = 35738934. Its totient is φ = 10211120.

The previous prime is 20422243. The next prime is 20422247. The reversal of 20422244 is 44222402.

It can be written as a sum of positive squares in only one way, i.e., 20160100 + 262144 = 4490^2 + 512^2 .

It is not an unprimeable number, because it can be changed into a prime (20422243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2552777 + ... + 2552784.

It is an arithmetic number, because the mean of its divisors is an integer number (5956489).

Almost surely, 2^20422244 is an apocalyptic number.

It is an amenable number.

20422244 is a deficient number, since it is larger than the sum of its proper divisors (15316690).

20422244 is a wasteful number, since it uses less digits than its factorization.

20422244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5105565 (or 5105563 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 20.

The square root of 20422244 is about 4519.0976975498. The cubic root of 20422244 is about 273.3387182494.

Adding to 20422244 its reverse (44222402), we get a palindrome (64644646).

The spelling of 20422244 in words is "twenty million, four hundred twenty-two thousand, two hundred forty-four".