20207164 has 24 divisors (see below), whose sum is σ = 36868608. Its totient is φ = 9679920.

The previous prime is 20207153. The next prime is 20207191. The reversal of 20207164 is 46170202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12507 + ... + 14029.

It is an arithmetic number, because the mean of its divisors is an integer number (1536192).

Almost surely, 2^20207164 is an apocalyptic number.

It is an amenable number.

20207164 is a deficient number, since it is larger than the sum of its proper divisors (16661444).

20207164 is a wasteful number, since it uses less digits than its factorization.

20207164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1665 (or 1663 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 22.

The square root of 20207164 is about 4495.2379247377. The cubic root of 20207164 is about 272.3757602149.

Adding to 20207164 its reverse (46170202), we get a palindrome (66377366).

The spelling of 20207164 in words is "twenty million, two hundred seven thousand, one hundred sixty-four".