20016166 has 4 divisors (see below), whose sum is σ = 30024252. Its totient is φ = 10008082.

The previous prime is 20016137. The next prime is 20016167. The reversal of 20016166 is 66161002.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20016167) 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 as a sum of consecutive naturals, namely, 5004040 + ... + 5004043.

It is an arithmetic number, because the mean of its divisors is an integer number (7506063).

Almost surely, 2^20016166 is an apocalyptic number.

20016166 is a deficient number, since it is larger than the sum of its proper divisors (10008086).

20016166 is a wasteful number, since it uses less digits than its factorization.

20016166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10008085.

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 20016166 is about 4473.9430036602. The cubic root of 20016166 is about 271.5148774219.

Adding to 20016166 its reverse (66161002), we get a palindrome (86177168).

The spelling of 20016166 in words is "twenty million, sixteen thousand, one hundred sixty-six".