20324430 has 48 divisors (see below), whose sum is σ = 60394464. Its totient is φ = 4645440.

The previous prime is 20324413. The next prime is 20324453. The reversal of 20324430 is 3442302.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15501 + ... + 16760.

It is an arithmetic number, because the mean of its divisors is an integer number (1258218).

Almost surely, 2^20324430 is an apocalyptic number.

20324430 is an abundant number, since it is smaller than the sum of its proper divisors (40070034).

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

20324430 is a wasteful number, since it uses less digits than its factorization.

20324430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32281 (or 32278 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 18.

The square root of 20324430 is about 4508.2624147226. The cubic root of 20324430 is about 272.9016269966.

Adding to 20324430 its reverse (3442302), we get a palindrome (23766732).

The spelling of 20324430 in words is "twenty million, three hundred twenty-four thousand, four hundred thirty".