20304102 has 64 divisors (see below), whose sum is σ = 51254784. Its totient is φ = 5218560.

The previous prime is 20304091. The next prime is 20304121. The reversal of 20304102 is 20140302.

It is a congruent number.

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 in 31 ways as a sum of consecutive naturals, for example, 21933 + ... + 22839.

It is an arithmetic number, because the mean of its divisors is an integer number (800856).

Almost surely, 2^20304102 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20304102, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25627392).

20304102 is an abundant number, since it is smaller than the sum of its proper divisors (30950682).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20304102 is a wasteful number, since it uses less digits than its factorization.

20304102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 973.

The product of its (nonzero) digits is 48, while the sum is 12.

The square root of 20304102 is about 4506.0073235626. The cubic root of 20304102 is about 272.8106134592.

Adding to 20304102 its reverse (20140302), we get a palindrome (40444404).

The spelling of 20304102 in words is "twenty million, three hundred four thousand, one hundred two".