20304108 has 96 divisors (see below), whose sum is σ = 58410240. Its totient is φ = 6123600.

The previous prime is 20304091. The next prime is 20304121. The reversal of 20304108 is 80140302.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

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, 96123 + ... + 96333.

It is an arithmetic number, because the mean of its divisors is an integer number (608440).

Almost surely, 2^20304108 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20304108, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29205120).

20304108 is an abundant number, since it is smaller than the sum of its proper divisors (38106132).

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

20304108 is a wasteful number, since it uses less digits than its factorization.

20304108 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 247 (or 227 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 20304108 is about 4506.0079893405. The cubic root of 20304108 is about 272.8106403317.

The spelling of 20304108 in words is "twenty million, three hundred four thousand, one hundred eight".