20009876 has 12 divisors (see below), whose sum is σ = 35075040. Its totient is φ = 9988440.

The previous prime is 20009863. The next prime is 20009887. The reversal of 20009876 is 67890002.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 1160 + ... + 6431.

It is an arithmetic number, because the mean of its divisors is an integer number (2922920).

Almost surely, 2^20009876 is an apocalyptic number.

It is an amenable number.

20009876 is a deficient number, since it is larger than the sum of its proper divisors (15065164).

20009876 is a wasteful number, since it uses less digits than its factorization.

20009876 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8254 (or 8252 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 20009876 is about 4473.2399890907. The cubic root of 20009876 is about 271.4864336213.

Adding to 20009876 its reverse (67890002), we get a palindrome (87899878).

The spelling of 20009876 in words is "twenty million, nine thousand, eight hundred seventy-six".