20208716 has 24 divisors (see below), whose sum is σ = 40851216. Its totient is φ = 8645120.

The previous prime is 20208707. The next prime is 20208719. The reversal of 20208716 is 61780202.

It is not an unprimeable number, because it can be changed into a prime (20208719) 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 7 ways as a sum of consecutive naturals, for example, 12761 + ... + 14256.

It is an arithmetic number, because the mean of its divisors is an integer number (1702134).

Almost surely, 2^20208716 is an apocalyptic number.

It is an amenable number.

20208716 is an abundant number, since it is smaller than the sum of its proper divisors (20642500).

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

20208716 is a wasteful number, since it uses less digits than its factorization.

20208716 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27049 (or 27047 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 26.

The square root of 20208716 is about 4495.4105485484. The cubic root of 20208716 is about 272.3827332594.

Adding to 20208716 its reverse (61780202), we get a palindrome (81988918).

The spelling of 20208716 in words is "twenty million, two hundred eight thousand, seven hundred sixteen".