20108803 has 24 divisors (see below), whose sum is σ = 24639120. Its totient is φ = 16248960.

The previous prime is 20108789. The next prime is 20108813. The reversal of 20108803 is 30880102.

It is not a de Polignac number, because 20108803 - 2¹³ = 20100611 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20108813) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 53725 + ... + 54097.

It is an arithmetic number, because the mean of its divisors is an integer number (1026630).

Almost surely, 2^20108803 is an apocalyptic number.

20108803 is a deficient number, since it is larger than the sum of its proper divisors (4530317).

20108803 is a wasteful number, since it uses less digits than its factorization.

20108803 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 439 (or 426 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 22.

The square root of 20108803 is about 4484.2840008189. The cubic root of 20108803 is about 271.9330997160.

Adding to 20108803 its reverse (30880102), we get a palindrome (50988905).

The spelling of 20108803 in words is "twenty million, one hundred eight thousand, eight hundred three".