20013304 has 16 divisors (see below), whose sum is σ = 37575720. Its totient is φ = 9993120.

The previous prime is 20013299. The next prime is 20013311. The reversal of 20013304 is 40331002.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7582 + ... + 9874.

Almost surely, 2^20013304 is an apocalyptic number.

It is an amenable number.

20013304 is a deficient number, since it is larger than the sum of its proper divisors (17562416).

20013304 is a wasteful number, since it uses less digits than its factorization.

20013304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3390 (or 3386 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 13.

The square root of 20013304 is about 4473.6231401404. The cubic root of 20013304 is about 271.5019360054.

Adding to 20013304 its reverse (40331002), we get a palindrome (60344306).

The spelling of 20013304 in words is "twenty million, thirteen thousand, three hundred four".