20306632 has 32 divisors (see below), whose sum is σ = 39657600. Its totient is φ = 9740224.

The previous prime is 20306623. The next prime is 20306633. The reversal of 20306632 is 23660302.

It is not an unprimeable number, because it can be changed into a prime (20306633) 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 7 ways as a sum of consecutive naturals, for example, 19419 + ... + 20437.

It is an arithmetic number, because the mean of its divisors is an integer number (1239300).

Almost surely, 2^20306632 is an apocalyptic number.

It is an amenable number.

20306632 is a deficient number, since it is larger than the sum of its proper divisors (19350968).

20306632 is a wasteful number, since it uses less digits than its factorization.

20306632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1125 (or 1121 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 22.

The square root of 20306632 is about 4506.2880511570. The cubic root of 20306632 is about 272.8219442104.

Adding to 20306632 its reverse (23660302), we get a palindrome (43966934).

The spelling of 20306632 in words is "twenty million, three hundred six thousand, six hundred thirty-two".