20327166 has 32 divisors (see below), whose sum is σ = 45346080. Its totient is φ = 6749568.

The previous prime is 20327161. The next prime is 20327179. The reversal of 20327166 is 66172302.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20327161) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17640 + ... + 18756.

It is an arithmetic number, because the mean of its divisors is an integer number (1417065).

Almost surely, 2^20327166 is an apocalyptic number.

20327166 is an abundant number, since it is smaller than the sum of its proper divisors (25018914).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20327166 is a wasteful number, since it uses less digits than its factorization.

20327166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1465 (or 1459 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 27.

The square root of 20327166 is about 4508.5658473621. The cubic root of 20327166 is about 272.9138721182.

Adding to 20327166 its reverse (66172302), we get a palindrome (86499468).

The spelling of 20327166 in words is "twenty million, three hundred twenty-seven thousand, one hundred sixty-six".