20330530 has 16 divisors (see below), whose sum is σ = 39921984. Its totient is φ = 7392880.

The previous prime is 20330509. The next prime is 20330539. The reversal of 20330530 is 3503302.

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 7 ways as a sum of consecutive naturals, for example, 92302 + ... + 92521.

It is an arithmetic number, because the mean of its divisors is an integer number (2495124).

Almost surely, 2^20330530 is an apocalyptic number.

20330530 is a deficient number, since it is larger than the sum of its proper divisors (19591454).

20330530 is a wasteful number, since it uses less digits than its factorization.

20330530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 184841.

The product of its (nonzero) digits is 270, while the sum is 16.

The square root of 20330530 is about 4508.9388995638. The cubic root of 20330530 is about 272.9289263831.

Adding to 20330530 its reverse (3503302), we get a palindrome (23833832).

The spelling of 20330530 in words is "twenty million, three hundred thirty thousand, five hundred thirty".