20938696 has 32 divisors (see below), whose sum is σ = 43011000. Its totient is φ = 9511936.

The previous prime is 20938693. The next prime is 20938739. The reversal of 20938696 is 69683902.

It can be written as a sum of positive squares in 4 ways, for example, as 14333796 + 6604900 = 3786^2 + 2570^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20938693) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1290 + ... + 6598.

Almost surely, 2^20938696 is an apocalyptic number.

It is an amenable number.

20938696 is an abundant number, since it is smaller than the sum of its proper divisors (22072304).

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

20938696 is a wasteful number, since it uses less digits than its factorization.

20938696 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5361 (or 5357 counting only the distinct ones).

The product of its (nonzero) digits is 139968, while the sum is 43.

The square root of 20938696 is about 4575.8819914854. The cubic root of 20938696 is about 275.6236907571.

The spelling of 20938696 in words is "twenty million, nine hundred thirty-eight thousand, six hundred ninety-six".