20208804 has 48 divisors (see below), whose sum is σ = 58791936. Its totient is φ = 5248800.

The previous prime is 20208803. The next prime is 20208817. The reversal of 20208804 is 40880202.

It is a super-2 number, since 2×20208804² = 816791518220832, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20208803) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 10012 + ... + 11859.

It is an arithmetic number, because the mean of its divisors is an integer number (1224832).

Almost surely, 2^20208804 is an apocalyptic number.

It is an amenable number.

20208804 is an abundant number, since it is smaller than the sum of its proper divisors (38583132).

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

20208804 is a wasteful number, since it uses less digits than its factorization.

20208804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21896 (or 21894 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 24.

The square root of 20208804 is about 4495.4203362978. The cubic root of 20208804 is about 272.3831286275.

It can be divided in two parts, 20208 and 804, that added together give a palindrome (21012).

The spelling of 20208804 in words is "twenty million, two hundred eight thousand, eight hundred four".