20522444 has 12 divisors (see below), whose sum is σ = 35947800. Its totient is φ = 10251648.

The previous prime is 20522429. The next prime is 20522449. The reversal of 20522444 is 44422502.

It is not an unprimeable number, because it can be changed into a prime (20522449) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4892 + ... + 8060.

It is an arithmetic number, because the mean of its divisors is an integer number (2995650).

Almost surely, 2^20522444 is an apocalyptic number.

It is an amenable number.

20522444 is a deficient number, since it is larger than the sum of its proper divisors (15425356).

20522444 is a wasteful number, since it uses less digits than its factorization.

20522444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4792 (or 4790 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 23.

The square root of 20522444 is about 4530.1704162206. The cubic root of 20522444 is about 273.7850268282.

Adding to 20522444 its reverse (44422502), we get a palindrome (64944946).

The spelling of 20522444 in words is "twenty million, five hundred twenty-two thousand, four hundred forty-four".