20323684 has 12 divisors (see below), whose sum is σ = 35966700. Its totient is φ = 10047488.

The previous prime is 20323669. The next prime is 20323691. The reversal of 20323684 is 48632302.

It can be written as a sum of positive squares in 2 ways, for example, as 6110784 + 14212900 = 2472^2 + 3770^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28189 + ... + 28900.

It is an arithmetic number, because the mean of its divisors is an integer number (2997225).

Almost surely, 2^20323684 is an apocalyptic number.

It is an amenable number.

20323684 is a deficient number, since it is larger than the sum of its proper divisors (15643016).

20323684 is a wasteful number, since it uses less digits than its factorization.

20323684 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57182 (or 57180 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 28.

The square root of 20323684 is about 4508.1796769872. The cubic root of 20323684 is about 272.8982880410.

Adding to 20323684 its reverse (48632302), we get a palindrome (68955986).

The spelling of 20323684 in words is "twenty million, three hundred twenty-three thousand, six hundred eighty-four".