20508044 has 6 divisors (see below), whose sum is σ = 35889084. Its totient is φ = 10254020.

The previous prime is 20508043. The next prime is 20508053. The reversal of 20508044 is 44080502.

It is not an unprimeable number, because it can be changed into a prime (20508041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2563502 + ... + 2563509.

It is an arithmetic number, because the mean of its divisors is an integer number (5981514).

Almost surely, 2^20508044 is an apocalyptic number.

It is an amenable number.

20508044 is a deficient number, since it is larger than the sum of its proper divisors (15381040).

20508044 is a wasteful number, since it uses less digits than its factorization.

20508044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5127015 (or 5127013 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 23.

The square root of 20508044 is about 4528.5807931404. The cubic root of 20508044 is about 273.7209761908.

Adding to 20508044 its reverse (44080502), we get a palindrome (64588546).

The spelling of 20508044 in words is "twenty million, five hundred eight thousand, forty-four".