20304332 has 6 divisors (see below), whose sum is σ = 35532588. Its totient is φ = 10152164.

The previous prime is 20304313. The next prime is 20304413. The reversal of 20304332 is 23340302.

It is a self number, because there is not a number n which added to its sum of digits gives 20304332.

It is an unprimeable number.

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, 2538038 + ... + 2538045.

It is an arithmetic number, because the mean of its divisors is an integer number (5922098).

Almost surely, 2^20304332 is an apocalyptic number.

It is an amenable number.

20304332 is a deficient number, since it is larger than the sum of its proper divisors (15228256).

20304332 is a wasteful number, since it uses less digits than its factorization.

20304332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5076087 (or 5076085 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 17.

The square root of 20304332 is about 4506.0328449757. The cubic root of 20304332 is about 272.8116435664.

Adding to 20304332 its reverse (23340302), we get a palindrome (43644634).

The spelling of 20304332 in words is "twenty million, three hundred four thousand, three hundred thirty-two".