20449333 has 2 divisors, whose sum is σ = 20449334. Its totient is φ = 20449332.

The previous prime is 20449327. The next prime is 20449337. The reversal of 20449333 is 33394402.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11675889 + 8773444 = 3417^2 + 2962^2 .

It is a cyclic number.

It is not a de Polignac number, because 20449333 - 2⁹ = 20448821 is a prime.

It is a zygodrome in base 7.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20449337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10224666 + 10224667.

It is an arithmetic number, because the mean of its divisors is an integer number (10224667).

Almost surely, 2^20449333 is an apocalyptic number.

It is an amenable number.

20449333 is a deficient number, since it is larger than the sum of its proper divisors (1).

20449333 is an equidigital number, since it uses as much as digits as its factorization.

20449333 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7776, while the sum is 28.

The square root of 20449333 is about 4522.0938734175. The cubic root of 20449333 is about 273.4595211849.

The spelling of 20449333 in words is "twenty million, four hundred forty-nine thousand, three hundred thirty-three".