20896804 has 6 divisors (see below), whose sum is σ = 36569414. Its totient is φ = 10448400.

The previous prime is 20896801. The next prime is 20896817. The reversal of 20896804 is 40869802.

It can be written as a sum of positive squares in only one way, i.e., 17656804 + 3240000 = 4202^2 + 1800^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20896801) 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 as a sum of consecutive naturals, namely, 2612097 + ... + 2612104.

Almost surely, 2^20896804 is an apocalyptic number.

It is an amenable number.

20896804 is a deficient number, since it is larger than the sum of its proper divisors (15672610).

20896804 is a wasteful number, since it uses less digits than its factorization.

20896804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5224205 (or 5224203 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 37.

The square root of 20896804 is about 4571.3022214682. The cubic root of 20896804 is about 275.4397548117.

The spelling of 20896804 in words is "twenty million, eight hundred ninety-six thousand, eight hundred four".