20504444 has 12 divisors (see below), whose sum is σ = 35927304. Its totient is φ = 10239504.

The previous prime is 20504437. The next prime is 20504453. The reversal of 20504444 is 44440502.

It is a congruent number.

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, 1082 + ... + 6494.

It is an arithmetic number, because the mean of its divisors is an integer number (2993942).

Almost surely, 2^20504444 is an apocalyptic number.

It is an amenable number.

20504444 is a deficient number, since it is larger than the sum of its proper divisors (15422860).

20504444 is a wasteful number, since it uses less digits than its factorization.

20504444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6364 (or 6362 counting only the distinct ones).

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

The square root of 20504444 is about 4528.1833001768. The cubic root of 20504444 is about 273.7049588469.

Adding to 20504444 its reverse (44440502), we get a palindrome (64944946).

The spelling of 20504444 in words is "twenty million, five hundred four thousand, four hundred forty-four".