20330352 has 160 divisors (see below), whose sum is σ = 68328960. Its totient is φ = 5738688.

The previous prime is 20330339. The next prime is 20330369. The reversal of 20330352 is 25303302.

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 pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 244903 + ... + 244985.

It is an arithmetic number, because the mean of its divisors is an integer number (427056).

Almost surely, 2^20330352 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20330352, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34164480).

20330352 is an abundant number, since it is smaller than the sum of its proper divisors (47998608).

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

20330352 is an frugal number, since it uses more digits than its factorization.

20330352 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119 (or 95 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 18.

The square root of 20330352 is about 4508.9191609520. The cubic root of 20330352 is about 272.9281298554.

Adding to 20330352 its reverse (25303302), we get a palindrome (45633654).

The spelling of 20330352 in words is "twenty million, three hundred thirty thousand, three hundred fifty-two".