20330506 has 16 divisors (see below), whose sum is σ = 35703360. Its totient is φ = 8500320.

The previous prime is 20330503. The next prime is 20330509. The reversal of 20330506 is 60503302.

It is an interprime number because it is at equal distance from previous prime (20330503) and next prime (20330509).

It is not an unprimeable number, because it can be changed into a prime (20330503) 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, 17136 + ... + 18283.

It is an arithmetic number, because the mean of its divisors is an integer number (2231460).

Almost surely, 2^20330506 is an apocalyptic number.

20330506 is a deficient number, since it is larger than the sum of its proper divisors (15372854).

20330506 is a wasteful number, since it uses less digits than its factorization.

20330506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35469.

The product of its (nonzero) digits is 540, while the sum is 19.

The square root of 20330506 is about 4508.9362381830. The cubic root of 20330506 is about 272.9288189864.

Adding to 20330506 its reverse (60503302), we get a palindrome (80833808).

The spelling of 20330506 in words is "twenty million, three hundred thirty thousand, five hundred six".