213022164 has 24 divisors (see below), whose sum is σ = 497726208. Its totient is φ = 70911040.

The previous prime is 213022163. The next prime is 213022169. The reversal of 213022164 is 461220312.

It is a self number, because there is not a number n which added to its sum of digits gives 213022164.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213022163) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2532 + ... + 20795.

It is an arithmetic number, because the mean of its divisors is an integer number (20738592).

Almost surely, 2^213022164 is an apocalyptic number.

It is an amenable number.

213022164 is an abundant number, since it is smaller than the sum of its proper divisors (284704044).

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

213022164 is a wasteful number, since it uses less digits than its factorization.

213022164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24095 (or 24093 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 213022164 is about 14595.2788257025. The cubic root of 213022164 is about 597.2299757338.

Adding to 213022164 its reverse (461220312), we get a palindrome (674242476).

The spelling of 213022164 in words is "two hundred thirteen million, twenty-two thousand, one hundred sixty-four".