20327201 has 4 divisors (see below), whose sum is σ = 20336304. Its totient is φ = 20318100.

The previous prime is 20327191. The next prime is 20327233. The reversal of 20327201 is 10272302.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 20327201 - 2⁶ = 20327137 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 20327201.

It is not an unprimeable number, because it can be changed into a prime (20327501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1346 + ... + 6516.

It is an arithmetic number, because the mean of its divisors is an integer number (5084076).

Almost surely, 2^20327201 is an apocalyptic number.

It is an amenable number.

20327201 is a deficient number, since it is larger than the sum of its proper divisors (9103).

20327201 is an equidigital number, since it uses as much as digits as its factorization.

20327201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9102.

The product of its (nonzero) digits is 168, while the sum is 17.

The square root of 20327201 is about 4508.5697288608. The cubic root of 20327201 is about 272.9140287555.

Adding to 20327201 its reverse (10272302), we get a palindrome (30599503).

The spelling of 20327201 in words is "twenty million, three hundred twenty-seven thousand, two hundred one".