20133233 has 4 divisors (see below), whose sum is σ = 20463348. Its totient is φ = 19803120.

The previous prime is 20133199. The next prime is 20133247. The reversal of 20133233 is 33233102.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 667489 + 19465744 = 817^2 + 4412^2 .

It is a cyclic number.

It is not a de Polignac number, because 20133233 - 2⁸ = 20132977 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20133833) 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 3 ways as a sum of consecutive naturals, for example, 164966 + ... + 165087.

It is an arithmetic number, because the mean of its divisors is an integer number (5115837).

Almost surely, 2^20133233 is an apocalyptic number.

It is an amenable number.

20133233 is a deficient number, since it is larger than the sum of its proper divisors (330115).

20133233 is an equidigital number, since it uses as much as digits as its factorization.

20133233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 330114.

The product of its (nonzero) digits is 324, while the sum is 17.

The square root of 20133233 is about 4487.0071317082. The cubic root of 20133233 is about 272.0431781584.

Adding to 20133233 its reverse (33233102), we get a palindrome (53366335).

The spelling of 20133233 in words is "twenty million, one hundred thirty-three thousand, two hundred thirty-three".