20330307 has 12 divisors (see below), whose sum is σ = 29446560. Its totient is φ = 13516368.

The previous prime is 20330291. The next prime is 20330309. The reversal of 20330307 is 70303302.

It is not a de Polignac number, because 20330307 - 2⁴ = 20330291 is a prime.

It is a super-3 number, since 3×20330307³ (a number of 23 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20330307.

It is not an unprimeable number, because it can be changed into a prime (20330309) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 598 + ... + 6404.

It is an arithmetic number, because the mean of its divisors is an integer number (2453880).

Almost surely, 2^20330307 is an apocalyptic number.

20330307 is a deficient number, since it is larger than the sum of its proper divisors (9116253).

20330307 is a wasteful number, since it uses less digits than its factorization.

20330307 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6202 (or 6199 counting only the distinct ones).

The product of its (nonzero) digits is 378, while the sum is 18.

The square root of 20330307 is about 4508.9141708398. The cubic root of 20330307 is about 272.9279284853.

Adding to 20330307 its reverse (70303302), we get a palindrome (90633609).

The spelling of 20330307 in words is "twenty million, three hundred thirty thousand, three hundred seven".