20716896 has 24 divisors (see below), whose sum is σ = 54382104. Its totient is φ = 6905600.

The previous prime is 20716873. The next prime is 20716907. The reversal of 20716896 is 69861702.

It is a tau number, because it is divible by the number of its divisors (24).

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, 107805 + ... + 107996.

It is an arithmetic number, because the mean of its divisors is an integer number (2265921).

Almost surely, 2^20716896 is an apocalyptic number.

It is an amenable number.

20716896 is an abundant number, since it is smaller than the sum of its proper divisors (33665208).

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

20716896 is a wasteful number, since it uses less digits than its factorization.

20716896 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 215814 (or 215806 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 39.

The square root of 20716896 is about 4551.5817031006. The cubic root of 20716896 is about 274.6470226103.

It can be divided in two parts, 20716 and 896, that added together give a palindrome (21612).

The spelling of 20716896 in words is "twenty million, seven hundred sixteen thousand, eight hundred ninety-six".