20324263 has 4 divisors (see below), whose sum is σ = 20335680. Its totient is φ = 20312848.

The previous prime is 20324237. The next prime is 20324267. The reversal of 20324263 is 36242302.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 36242302 = 2 ⋅18121151.

It is a cyclic number.

It is not a de Polignac number, because 20324263 - 2¹⁷ = 20193191 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20324267) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2398 + ... + 6811.

It is an arithmetic number, because the mean of its divisors is an integer number (5083920).

Almost surely, 2^20324263 is an apocalyptic number.

20324263 is a deficient number, since it is larger than the sum of its proper divisors (11417).

20324263 is an equidigital number, since it uses as much as digits as its factorization.

20324263 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11416.

The product of its (nonzero) digits is 1728, while the sum is 22.

The square root of 20324263 is about 4508.2438931362. The cubic root of 20324263 is about 272.9008795431.

Adding to 20324263 its reverse (36242302), we get a palindrome (56566565).

The spelling of 20324263 in words is "twenty million, three hundred twenty-four thousand, two hundred sixty-three".