20338039 has 6 divisors (see below), whose sum is σ = 20528664. Its totient is φ = 20148300.

The previous prime is 20338027. The next prime is 20338057. The reversal of 20338039 is 93083302.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-20338039 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20337998 and 20338016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20338099) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 55234 + ... + 55600.

It is an arithmetic number, because the mean of its divisors is an integer number (3421444).

Almost surely, 2^20338039 is an apocalyptic number.

20338039 is a deficient number, since it is larger than the sum of its proper divisors (190625).

20338039 is an frugal number, since it uses more digits than its factorization.

20338039 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 885 (or 518 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 28.

The square root of 20338039 is about 4509.7715019721. The cubic root of 20338039 is about 272.9625239831.

The spelling of 20338039 in words is "twenty million, three hundred thirty-eight thousand, thirty-nine".