20008896 has 84 divisors (see below), whose sum is σ = 55622952. Its totient is φ = 6347264.

The previous prime is 20008871. The next prime is 20008903. The reversal of 20008896 is 69880002.

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 11 ways as a sum of consecutive naturals, for example, 101470 + ... + 101666.

It is an arithmetic number, because the mean of its divisors is an integer number (662178).

Almost surely, 2^20008896 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20008896, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27811476).

20008896 is an abundant number, since it is smaller than the sum of its proper divisors (35614056).

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

20008896 is a wasteful number, since it uses less digits than its factorization.

20008896 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 258 (or 225 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 33.

The square root of 20008896 is about 4473.1304474607. The cubic root of 20008896 is about 271.4820014591.

Adding to 20008896 its reverse (69880002), we get a palindrome (89888898).

The spelling of 20008896 in words is "twenty million, eight thousand, eight hundred ninety-six".