20636332 has 12 divisors (see below), whose sum is σ = 36302056. Its totient is φ = 10264320.

The previous prime is 20636327. The next prime is 20636333. The reversal of 20636332 is 23363602.

It is a junction number, because it is equal to n+sod(n) for n = 20636297 and 20636306.

It is not an unprimeable number, because it can be changed into a prime (20636333) 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, 12594 + ... + 14137.

Almost surely, 2^20636332 is an apocalyptic number.

It is an amenable number.

20636332 is a deficient number, since it is larger than the sum of its proper divisors (15665724).

20636332 is a wasteful number, since it uses less digits than its factorization.

20636332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26928 (or 26926 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 25.

The square root of 20636332 is about 4542.7229719630. The cubic root of 20636332 is about 274.2905437414.

Adding to 20636332 its reverse (23363602), we get a palindrome (43999934).

The spelling of 20636332 in words is "twenty million, six hundred thirty-six thousand, three hundred thirty-two".