20641327 has 32 divisors (see below), whose sum is σ = 26127360. Its totient is φ = 15924480.

The previous prime is 20641307. The next prime is 20641339. The reversal of 20641327 is 72314602.

It is a cyclic number.

It is not a de Polignac number, because 20641327 - 2¹¹ = 20639279 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20641307) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 349824 + ... + 349882.

It is an arithmetic number, because the mean of its divisors is an integer number (816480).

Almost surely, 2^20641327 is an apocalyptic number.

20641327 is a deficient number, since it is larger than the sum of its proper divisors (5486033).

20641327 is a wasteful number, since it uses less digits than its factorization.

20641327 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 183.

The product of its (nonzero) digits is 2016, while the sum is 25.

The square root of 20641327 is about 4543.2727190870. The cubic root of 20641327 is about 274.3126725244.

Adding to 20641327 its reverse (72314602), we get a palindrome (92955929).

The spelling of 20641327 in words is "twenty million, six hundred forty-one thousand, three hundred twenty-seven".