20108388 has 24 divisors (see below), whose sum is σ = 46992960. Its totient is φ = 6692320.

The previous prime is 20108377. The next prime is 20108411. The reversal of 20108388 is 88380102.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12553 + ... + 14063.

It is an arithmetic number, because the mean of its divisors is an integer number (1958040).

Almost surely, 2^20108388 is an apocalyptic number.

It is an amenable number.

20108388 is an abundant number, since it is smaller than the sum of its proper divisors (26884572).

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

20108388 is a wasteful number, since it uses less digits than its factorization.

20108388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2627 (or 2625 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 30.

The square root of 20108388 is about 4484.2377278641. The cubic root of 20108388 is about 271.9312290094.

The spelling of 20108388 in words is "twenty million, one hundred eight thousand, three hundred eighty-eight".