20104875 has 128 divisors (see below), whose sum is σ = 45527040. Its totient is φ = 8553600.

The previous prime is 20104867. The next prime is 20104901. The reversal of 20104875 is 57840102.

It is not a de Polignac number, because 20104875 - 2³ = 20104867 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

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 in 127 ways as a sum of consecutive naturals, for example, 543357 + ... + 543393.

It is an arithmetic number, because the mean of its divisors is an integer number (355680).

Almost surely, 2^20104875 is an apocalyptic number.

20104875 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

20104875 is an abundant number, since it is smaller than the sum of its proper divisors (25422165).

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

20104875 is a wasteful number, since it uses less digits than its factorization.

20104875 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91 (or 75 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 27.

The square root of 20104875 is about 4483.8460053842. The cubic root of 20104875 is about 271.9153923339.

Adding to 20104875 its reverse (57840102), we get a palindrome (77944977).

The spelling of 20104875 in words is "twenty million, one hundred four thousand, eight hundred seventy-five".