20043433 has 2 divisors, whose sum is σ = 20043434. Its totient is φ = 20043432.

The previous prime is 20043409. The next prime is 20043451. The reversal of 20043433 is 33434002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10575504 + 9467929 = 3252^2 + 3077^2 .

It is a cyclic number.

It is not a de Polignac number, because 20043433 - 2²¹ = 17946281 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20043433.

It is not a weakly prime, because it can be changed into another prime (20043403) 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 as a sum of consecutive naturals, namely, 10021716 + 10021717.

It is an arithmetic number, because the mean of its divisors is an integer number (10021717).

Almost surely, 2^20043433 is an apocalyptic number.

It is an amenable number.

20043433 is a deficient number, since it is larger than the sum of its proper divisors (1).

20043433 is an equidigital number, since it uses as much as digits as its factorization.

20043433 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 19.

The square root of 20043433 is about 4476.9892785219. The cubic root of 20043433 is about 271.6381117607.

Adding to 20043433 its reverse (33434002), we get a palindrome (53477435).

The spelling of 20043433 in words is "twenty million, forty-three thousand, four hundred thirty-three".