20304363 has 8 divisors (see below), whose sum is σ = 27102208. Its totient is φ = 13521384.

The previous prime is 20304313. The next prime is 20304413. The reversal of 20304363 is 36340302.

It is an interprime number because it is at equal distance from previous prime (20304313) and next prime (20304413).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20304363 - 2¹⁷ = 20173291 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20304313) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6 + ... + 6372.

It is an arithmetic number, because the mean of its divisors is an integer number (3387776).

Almost surely, 2^20304363 is an apocalyptic number.

20304363 is a deficient number, since it is larger than the sum of its proper divisors (6797845).

20304363 is a wasteful number, since it uses less digits than its factorization.

20304363 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7433.

The product of its (nonzero) digits is 1296, while the sum is 21.

The square root of 20304363 is about 4506.0362848073. The cubic root of 20304363 is about 272.8117824063.

Adding to 20304363 its reverse (36340302), we get a palindrome (56644665).

The spelling of 20304363 in words is "twenty million, three hundred four thousand, three hundred sixty-three".