20330432 has 14 divisors (see below), whose sum is σ = 40343328. Its totient is φ = 10165184.

The previous prime is 20330411. The next prime is 20330467. The reversal of 20330432 is 23403302.

It is a self number, because there is not a number n which added to its sum of digits gives 20330432.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 158768 + ... + 158895.

Almost surely, 2^20330432 is an apocalyptic number.

It is an amenable number.

20330432 is a deficient number, since it is larger than the sum of its proper divisors (20012896).

20330432 is an equidigital number, since it uses as much as digits as its factorization.

20330432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 317675 (or 317665 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 17.

The square root of 20330432 is about 4508.9280322489. The cubic root of 20330432 is about 272.9284878459.

Adding to 20330432 its reverse (23403302), we get a palindrome (43733734).

The spelling of 20330432 in words is "twenty million, three hundred thirty thousand, four hundred thirty-two".