20087804 has 24 divisors (see below), whose sum is σ = 38841600. Its totient is φ = 9013680.

The previous prime is 20087797. The next prime is 20087813. The reversal of 20087804 is 40878002.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 587 + ... + 6365.

It is an arithmetic number, because the mean of its divisors is an integer number (1618400).

Almost surely, 2^20087804 is an apocalyptic number.

It is an amenable number.

20087804 is a deficient number, since it is larger than the sum of its proper divisors (18753796).

20087804 is a wasteful number, since it uses less digits than its factorization.

20087804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5873 (or 5871 counting only the distinct ones).

The product of its (nonzero) digits is 3584, while the sum is 29.

The square root of 20087804 is about 4481.9419898075. The cubic root of 20087804 is about 271.8384096439.

The spelling of 20087804 in words is "twenty million, eighty-seven thousand, eight hundred four".