20303232 has 64 divisors (see below), whose sum is σ = 55426800. Its totient is φ = 6580224.

The previous prime is 20303203. The next prime is 20303249. The reversal of 20303232 is 23230302.

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13494 + ... + 14922.

Almost surely, 2^20303232 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 20303232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27713400).

20303232 is an abundant number, since it is smaller than the sum of its proper divisors (35123568).

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

20303232 is a wasteful number, since it uses less digits than its factorization.

20303232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1483 (or 1471 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 15.

The square root of 20303232 is about 4505.9107847360. The cubic root of 20303232 is about 272.8067168964.

Adding to 20303232 its reverse (23230302), we get a palindrome (43533534).

The spelling of 20303232 in words is "twenty million, three hundred three thousand, two hundred thirty-two".