20636852 has 6 divisors (see below), whose sum is σ = 36114498. Its totient is φ = 10318424.

The previous prime is 20636813. The next prime is 20636867. The reversal of 20636852 is 25863602.

It can be written as a sum of positive squares in only one way, i.e., 20124196 + 512656 = 4486^2 + 716^2 .

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 2579603 + ... + 2579610.

It is an arithmetic number, because the mean of its divisors is an integer number (6019083).

Almost surely, 2^20636852 is an apocalyptic number.

It is an amenable number.

20636852 is a deficient number, since it is larger than the sum of its proper divisors (15477646).

20636852 is a wasteful number, since it uses less digits than its factorization.

20636852 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5159217 (or 5159215 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 32.

The square root of 20636852 is about 4542.7802059972. The cubic root of 20636852 is about 274.2928476051.

The spelling of 20636852 in words is "twenty million, six hundred thirty-six thousand, eight hundred fifty-two".