20324505 has 16 divisors (see below), whose sum is σ = 33641280. Its totient is φ = 10465728.

The previous prime is 20324483. The next prime is 20324527. The reversal of 20324505 is 50542302.

It is an interprime number because it is at equal distance from previous prime (20324483) and next prime (20324527).

It is not a de Polignac number, because 20324505 - 2¹² = 20320409 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22927 + ... + 23796.

It is an arithmetic number, because the mean of its divisors is an integer number (2102580).

Almost surely, 2^20324505 is an apocalyptic number.

It is an amenable number.

20324505 is a deficient number, since it is larger than the sum of its proper divisors (13316775).

20324505 is a wasteful number, since it uses less digits than its factorization.

20324505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46760.

The product of its (nonzero) digits is 1200, while the sum is 21.

The square root of 20324505 is about 4508.2707327755. The cubic root of 20324505 is about 272.9019626779.

Adding to 20324505 its reverse (50542302), we get a palindrome (70866807).

The spelling of 20324505 in words is "twenty million, three hundred twenty-four thousand, five hundred five".