20327849 has 2 divisors, whose sum is σ = 20327850. Its totient is φ = 20327848.

The previous prime is 20327807. The next prime is 20327861. The reversal of 20327849 is 94872302.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17909824 + 2418025 = 4232^2 + 1555^2 .

It is a cyclic number.

It is not a de Polignac number, because 20327849 - 2¹² = 20323753 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (20327899) 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, 10163924 + 10163925.

It is an arithmetic number, because the mean of its divisors is an integer number (10163925).

Almost surely, 2^20327849 is an apocalyptic number.

It is an amenable number.

20327849 is a deficient number, since it is larger than the sum of its proper divisors (1).

20327849 is an equidigital number, since it uses as much as digits as its factorization.

20327849 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24192, while the sum is 35.

The square root of 20327849 is about 4508.6415914331. The cubic root of 20327849 is about 272.9169287516.

The spelling of 20327849 in words is "twenty million, three hundred twenty-seven thousand, eight hundred forty-nine".