20027166 has 8 divisors (see below), whose sum is σ = 40054344. Its totient is φ = 6675720.

The previous prime is 20027131. The next prime is 20027177. The reversal of 20027166 is 66172002.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

20027166 is an admirable number.

It is a congruent number.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 1668925 + ... + 1668936.

It is an arithmetic number, because the mean of its divisors is an integer number (5006793).

Almost surely, 2^20027166 is an apocalyptic number.

20027166 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

20027166 is a wasteful number, since it uses less digits than its factorization.

20027166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3337866.

The product of its (nonzero) digits is 1008, while the sum is 24.

The square root of 20027166 is about 4475.1721754587. The cubic root of 20027166 is about 271.5646058381.

Adding to 20027166 its reverse (66172002), we get a palindrome (86199168).

The spelling of 20027166 in words is "twenty million, twenty-seven thousand, one hundred sixty-six".