20307696 has 40 divisors (see below), whose sum is σ = 53687040. Its totient is φ = 6611136.

The previous prime is 20307691. The next prime is 20307719. The reversal of 20307696 is 69670302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20307691) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2856 + ... + 6983.

It is an arithmetic number, because the mean of its divisors is an integer number (1342176).

Almost surely, 2^20307696 is an apocalyptic number.

It is an amenable number.

20307696 is an abundant number, since it is smaller than the sum of its proper divisors (33379344).

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

20307696 is a wasteful number, since it uses less digits than its factorization.

20307696 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9893 (or 9887 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 33.

The square root of 20307696 is about 4506.4061068661. The cubic root of 20307696 is about 272.8267091148.

Adding to 20307696 its reverse (69670302), we get a palindrome (89977998).

The spelling of 20307696 in words is "twenty million, three hundred seven thousand, six hundred ninety-six".