20441233 has 2 divisors, whose sum is σ = 20441234. Its totient is φ = 20441232.

The previous prime is 20441203. The next prime is 20441249. The reversal of 20441233 is 33214402.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20178064 + 263169 = 4492^2 + 513^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20441233 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20441233.

It is not a weakly prime, because it can be changed into another prime (20441203) 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, 10220616 + 10220617.

It is an arithmetic number, because the mean of its divisors is an integer number (10220617).

Almost surely, 2^20441233 is an apocalyptic number.

It is an amenable number.

20441233 is a deficient number, since it is larger than the sum of its proper divisors (1).

20441233 is an equidigital number, since it uses as much as digits as its factorization.

20441233 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 20441233 is about 4521.1981818982. The cubic root of 20441233 is about 273.4234105589.

Adding to 20441233 its reverse (33214402), we get a palindrome (53655635).

It can be divided in two parts, 2044 and 1233, that multiplied together give a palindrome (2520252).

The spelling of 20441233 in words is "twenty million, four hundred forty-one thousand, two hundred thirty-three".