20327471 has 2 divisors, whose sum is σ = 20327472. Its totient is φ = 20327470.

The previous prime is 20327459. The next prime is 20327477. The reversal of 20327471 is 17472302.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20327471 - 2¹⁴ = 20311087 is a prime.

It is a super-3 number, since 3×20327471³ (a number of 23 digits) contains 333 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20327471.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20327477) 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, 10163735 + 10163736.

It is an arithmetic number, because the mean of its divisors is an integer number (10163736).

Almost surely, 2^20327471 is an apocalyptic number.

20327471 is a deficient number, since it is larger than the sum of its proper divisors (1).

20327471 is an equidigital number, since it uses as much as digits as its factorization.

20327471 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2352, while the sum is 26.

The square root of 20327471 is about 4508.5996717384. The cubic root of 20327471 is about 272.9152370947.

Adding to 20327471 its reverse (17472302), we get a palindrome (37799773).

The spelling of 20327471 in words is "twenty million, three hundred twenty-seven thousand, four hundred seventy-one".