20146164 has 12 divisors (see below), whose sum is σ = 47007744. Its totient is φ = 6715384.

The previous prime is 20146157. The next prime is 20146169. The reversal of 20146164 is 46164102.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20146169) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 839412 + ... + 839435.

It is an arithmetic number, because the mean of its divisors is an integer number (3917312).

Almost surely, 2^20146164 is an apocalyptic number.

It is an amenable number.

20146164 is an abundant number, since it is smaller than the sum of its proper divisors (26861580).

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

20146164 is a wasteful number, since it uses less digits than its factorization.

20146164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1678854 (or 1678852 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 24.

The square root of 20146164 is about 4488.4478386186. The cubic root of 20146164 is about 272.1014075459.

The spelling of 20146164 in words is "twenty million, one hundred forty-six thousand, one hundred sixty-four".