20816108 has 6 divisors (see below), whose sum is σ = 36428196. Its totient is φ = 10408052.

The previous prime is 20816099. The next prime is 20816111. The reversal of 20816108 is 80161802.

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, 2602010 + ... + 2602017.

It is an arithmetic number, because the mean of its divisors is an integer number (6071366).

Almost surely, 2^20816108 is an apocalyptic number.

It is an amenable number.

20816108 is a deficient number, since it is larger than the sum of its proper divisors (15612088).

20816108 is a wasteful number, since it uses less digits than its factorization.

20816108 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5204031 (or 5204029 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 26.

The square root of 20816108 is about 4562.4673149514. The cubic root of 20816108 is about 275.0847474342.

The spelling of 20816108 in words is "twenty million, eight hundred sixteen thousand, one hundred eight".