20330532 has 36 divisors (see below), whose sum is σ = 54097680. Its totient is φ = 6419952.

The previous prime is 20330509. The next prime is 20330539. The reversal of 20330532 is 23503302.

It is a tau number, because it is divible by the number of its divisors (36).

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

It is not an unprimeable number, because it can be changed into a prime (20330539) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14178 + ... + 15545.

Almost surely, 2^20330532 is an apocalyptic number.

It is an amenable number.

20330532 is an abundant number, since it is smaller than the sum of its proper divisors (33767148).

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

20330532 is a wasteful number, since it uses less digits than its factorization.

20330532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29752 (or 29747 counting only the distinct ones).

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

The square root of 20330532 is about 4508.9391213455. The cubic root of 20330532 is about 272.9289353328.

Adding to 20330532 its reverse (23503302), we get a palindrome (43833834).

The spelling of 20330532 in words is "twenty million, three hundred thirty thousand, five hundred thirty-two".