20938116 has 24 divisors (see below), whose sum is σ = 50541120. Its totient is φ = 6738592.

The previous prime is 20938091. The next prime is 20938117. The reversal of 20938116 is 61183902.

It is not an unprimeable number, because it can be changed into a prime (20938117) 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, 29736 + ... + 30431.

It is an arithmetic number, because the mean of its divisors is an integer number (2105880).

Almost surely, 2^20938116 is an apocalyptic number.

It is an amenable number.

20938116 is an abundant number, since it is smaller than the sum of its proper divisors (29603004).

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

20938116 is a wasteful number, since it uses less digits than its factorization.

20938116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60203 (or 60201 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 30.

The square root of 20938116 is about 4575.8186152862. The cubic root of 20938116 is about 275.6211458164.

The spelling of 20938116 in words is "twenty million, nine hundred thirty-eight thousand, one hundred sixteen".