20808696 has 32 divisors (see below), whose sum is σ = 52439040. Its totient is φ = 6880608.

The previous prime is 20808691. The next prime is 20808703. The reversal of 20808696 is 69680802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20808691) 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, 366 + ... + 6461.

It is an arithmetic number, because the mean of its divisors is an integer number (1638720).

Almost surely, 2^20808696 is an apocalyptic number.

It is an amenable number.

20808696 is an abundant number, since it is smaller than the sum of its proper divisors (31630344).

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

20808696 is a wasteful number, since it uses less digits than its factorization.

20808696 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6963 (or 6959 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 39.

The square root of 20808696 is about 4561.6549628397. The cubic root of 20808696 is about 275.0520937124.

The spelling of 20808696 in words is "twenty million, eight hundred eight thousand, six hundred ninety-six".