20046171 has 16 divisors (see below), whose sum is σ = 27740160. Its totient is φ = 12866880.

The previous prime is 20046167. The next prime is 20046203. The reversal of 20046171 is 17164002.

It is not a de Polignac number, because 20046171 - 2² = 20046167 is a prime.

It is a super-2 number, since 2×20046171² = 803697943522482, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20046101) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 8686 + ... + 10748.

It is an arithmetic number, because the mean of its divisors is an integer number (1733760).

Almost surely, 2^20046171 is an apocalyptic number.

20046171 is a deficient number, since it is larger than the sum of its proper divisors (7693989).

20046171 is a wasteful number, since it uses less digits than its factorization.

20046171 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2186.

The product of its (nonzero) digits is 336, while the sum is 21.

The square root of 20046171 is about 4477.2950539360. The cubic root of 20046171 is about 271.6504800891.

The spelling of 20046171 in words is "twenty million, forty-six thousand, one hundred seventy-one".