20818108 has 6 divisors (see below), whose sum is σ = 36431696. Its totient is φ = 10409052.

The previous prime is 20818099. The next prime is 20818121. The reversal of 20818108 is 80181802.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2602260 + ... + 2602267.

Almost surely, 2^20818108 is an apocalyptic number.

It is an amenable number.

20818108 is a deficient number, since it is larger than the sum of its proper divisors (15613588).

20818108 is a wasteful number, since it uses less digits than its factorization.

20818108 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5204531 (or 5204529 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 28.

The square root of 20818108 is about 4562.6864893394. The cubic root of 20818108 is about 275.0935571482.

The spelling of 20818108 in words is "twenty million, eight hundred eighteen thousand, one hundred eight".