20004876 has 18 divisors (see below), whose sum is σ = 50567972. Its totient is φ = 6668280.

The previous prime is 20004851. The next prime is 20004883. The reversal of 20004876 is 67840002.

It is a tau number, because it is divible by the number of its divisors (18).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 277810 + ... + 277881.

Almost surely, 2^20004876 is an apocalyptic number.

It is an amenable number.

20004876 is an abundant number, since it is smaller than the sum of its proper divisors (30563096).

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

20004876 is a wasteful number, since it uses less digits than its factorization.

20004876 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 555701 (or 555696 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 20004876 is about 4472.6810751494. The cubic root of 20004876 is about 271.4638190342.

Adding to 20004876 its reverse (67840002), we get a palindrome (87844878).

The spelling of 20004876 in words is "twenty million, four thousand, eight hundred seventy-six".