20852116 has 12 divisors (see below), whose sum is σ = 36814932. Its totient is φ = 10333568.

The previous prime is 20852113. The next prime is 20852123. The reversal of 20852116 is 61125802.

It can be written as a sum of positive squares in 2 ways, for example, as 4884100 + 15968016 = 2210^2 + 3996^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20852113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22615 + ... + 23518.

It is an arithmetic number, because the mean of its divisors is an integer number (3067911).

Almost surely, 2^20852116 is an apocalyptic number.

It is an amenable number.

20852116 is a deficient number, since it is larger than the sum of its proper divisors (15962816).

20852116 is a wasteful number, since it uses less digits than its factorization.

20852116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46250 (or 46248 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 25.

The square root of 20852116 is about 4566.4117203774. The cubic root of 20852116 is about 275.2432712347.

Adding to 20852116 its reverse (61125802), we get a palindrome (81977918).

The spelling of 20852116 in words is "twenty million, eight hundred fifty-two thousand, one hundred sixteen".