20330133 has 16 divisors (see below), whose sum is σ = 28835520. Its totient is φ = 12704256.

The previous prime is 20330129. The next prime is 20330143. The reversal of 20330133 is 33103302.

It is not a de Polignac number, because 20330133 - 2² = 20330129 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20330143) 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 15 ways as a sum of consecutive naturals, for example, 3691 + ... + 7367.

It is an arithmetic number, because the mean of its divisors is an integer number (1802220).

Almost surely, 2^20330133 is an apocalyptic number.

It is an amenable number.

20330133 is a deficient number, since it is larger than the sum of its proper divisors (8505387).

20330133 is a wasteful number, since it uses less digits than its factorization.

20330133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3796.

The product of its (nonzero) digits is 162, while the sum is 15.

The square root of 20330133 is about 4508.8948756874. The cubic root of 20330133 is about 272.9271498514.

Adding to 20330133 its reverse (33103302), we get a palindrome (53433435).

The spelling of 20330133 in words is "twenty million, three hundred thirty thousand, one hundred thirty-three".