20205033 has 4 divisors (see below), whose sum is σ = 26940048. Its totient is φ = 13470020.

The previous prime is 20205023. The next prime is 20205041. The reversal of 20205033 is 33050202.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20205033 - 2⁵ = 20205001 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20205023) 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, 3367503 + ... + 3367508.

It is an arithmetic number, because the mean of its divisors is an integer number (6735012).

Almost surely, 2^20205033 is an apocalyptic number.

It is an amenable number.

20205033 is a deficient number, since it is larger than the sum of its proper divisors (6735015).

20205033 is an equidigital number, since it uses as much as digits as its factorization.

20205033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6735014.

The product of its (nonzero) digits is 180, while the sum is 15.

The square root of 20205033 is about 4495.0008898776. Note that the first 3 decimals coincide. The cubic root of 20205033 is about 272.3661851759.

Adding to 20205033 its reverse (33050202), we get a palindrome (53255235).

The spelling of 20205033 in words is "twenty million, two hundred five thousand, thirty-three".