20306044 has 24 divisors (see below), whose sum is σ = 39817008. Its totient is φ = 8979840.

The previous prime is 20306017. The next prime is 20306059. The reversal of 20306044 is 44060302.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4609 + ... + 7864.

It is an arithmetic number, because the mean of its divisors is an integer number (1659042).

Almost surely, 2^20306044 is an apocalyptic number.

It is an amenable number.

20306044 is a deficient number, since it is larger than the sum of its proper divisors (19510964).

20306044 is a wasteful number, since it uses less digits than its factorization.

20306044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12525 (or 12523 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 20306044 is about 4506.2228085171. Note that the first 3 decimals coincide. The cubic root of 20306044 is about 272.8193109024.

Adding to 20306044 its reverse (44060302), we get a palindrome (64366346).

The spelling of 20306044 in words is "twenty million, three hundred six thousand, forty-four".