20324424 has 16 divisors (see below), whose sum is σ = 50811120. Its totient is φ = 6774800.

The previous prime is 20324413. The next prime is 20324453. The reversal of 20324424 is 42442302.

It is a self number, because there is not a number n which added to its sum of digits gives 20324424.

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, 423402 + ... + 423449.

It is an arithmetic number, because the mean of its divisors is an integer number (3175695).

Almost surely, 2^20324424 is an apocalyptic number.

20324424 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

20324424 is an abundant number, since it is smaller than the sum of its proper divisors (30486696).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20324424 is a wasteful number, since it uses less digits than its factorization.

20324424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 846860 (or 846856 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 21.

The square root of 20324424 is about 4508.2617492777. The cubic root of 20324424 is about 272.9016001420.

Adding to 20324424 its reverse (42442302), we get a palindrome (62766726).

The spelling of 20324424 in words is "twenty million, three hundred twenty-four thousand, four hundred twenty-four".