20324513 has 8 divisors (see below), whose sum is σ = 22208256. Its totient is φ = 18446800.

The previous prime is 20324483. The next prime is 20324527. The reversal of 20324513 is 31542302.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20324513 - 2¹⁰ = 20323489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20324573) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8423 + ... + 10563.

It is an arithmetic number, because the mean of its divisors is an integer number (2776032).

Almost surely, 2^20324513 is an apocalyptic number.

It is an amenable number.

20324513 is a deficient number, since it is larger than the sum of its proper divisors (1883743).

20324513 is a wasteful number, since it uses less digits than its factorization.

20324513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3015.

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 20324513 is about 4508.2716200336. The cubic root of 20324513 is about 272.9019984839.

Adding to 20324513 its reverse (31542302), we get a palindrome (51866815).

The spelling of 20324513 in words is "twenty million, three hundred twenty-four thousand, five hundred thirteen".