20875803 has 24 divisors (see below), whose sum is σ = 31029264. Its totient is φ = 12409920.

The previous prime is 20875781. The next prime is 20875817. The reversal of 20875803 is 30857802.

It is not a de Polignac number, because 20875803 - 2⁹ = 20875291 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20875823) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 37201 + ... + 37757.

It is an arithmetic number, because the mean of its divisors is an integer number (1292886).

Almost surely, 2^20875803 is an apocalyptic number.

20875803 is a deficient number, since it is larger than the sum of its proper divisors (10153461).

20875803 is a wasteful number, since it uses less digits than its factorization.

20875803 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 635 (or 604 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 33.

The square root of 20875803 is about 4569.0045961894. The cubic root of 20875803 is about 275.3474528317.

The spelling of 20875803 in words is "twenty million, eight hundred seventy-five thousand, eight hundred three".