20304411 has 16 divisors (see below), whose sum is σ = 28216320. Its totient is φ = 12972960.

The previous prime is 20304313. The next prime is 20304413. The reversal of 20304411 is 11440302.

It is not a de Polignac number, because 20304411 - 2¹¹ = 20302363 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20304413) by changing a digit.

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 in 15 ways as a sum of consecutive naturals, for example, 9136 + ... + 11138.

It is an arithmetic number, because the mean of its divisors is an integer number (1763520).

Almost surely, 2^20304411 is an apocalyptic number.

20304411 is a deficient number, since it is larger than the sum of its proper divisors (7911909).

20304411 is a wasteful number, since it uses less digits than its factorization.

20304411 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2146.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 20304411 is about 4506.0416109930. The cubic root of 20304411 is about 272.8119973840.

Adding to 20304411 its reverse (11440302), we get a palindrome (31744713).

It can be divided in two parts, 2030 and 4411, that added together give a triangular number (6441 = T₁₁₃).

The spelling of 20304411 in words is "twenty million, three hundred four thousand, four hundred eleven".