20710212 has 24 divisors (see below), whose sum is σ = 50425536. Its totient is φ = 6603168.

The previous prime is 20710187. The next prime is 20710213. The reversal of 20710212 is 21201702.

It is a junction number, because it is equal to n+sod(n) for n = 20710191 and 20710200.

It is not an unprimeable number, because it can be changed into a prime (20710213) 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, 37243 + ... + 37794.

It is an arithmetic number, because the mean of its divisors is an integer number (2101064).

Almost surely, 2^20710212 is an apocalyptic number.

It is an amenable number.

20710212 is an abundant number, since it is smaller than the sum of its proper divisors (29715324).

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

20710212 is a wasteful number, since it uses less digits than its factorization.

20710212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75067 (or 75065 counting only the distinct ones).

The product of its (nonzero) digits is 56, while the sum is 15.

The square root of 20710212 is about 4550.8473936180. The cubic root of 20710212 is about 274.6174825004.

Adding to 20710212 its reverse (21201702), we get a palindrome (41911914).

The spelling of 20710212 in words is "twenty million, seven hundred ten thousand, two hundred twelve".