220323164 has 48 divisors (see below), whose sum is σ = 426074880. Its totient is φ = 99221760.

The previous prime is 220323163. The next prime is 220323167. The reversal of 220323164 is 461323022.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220323163) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 421007 + ... + 421529.

It is an arithmetic number, because the mean of its divisors is an integer number (8876560).

Almost surely, 2^220323164 is an apocalyptic number.

It is an amenable number.

220323164 is a deficient number, since it is larger than the sum of its proper divisors (205751716).

220323164 is a wasteful number, since it uses less digits than its factorization.

220323164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 810 (or 808 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 23.

The square root of 220323164 is about 14843.2868327739. The cubic root of 220323164 is about 603.9765169298.

Adding to 220323164 its reverse (461323022), we get a palindrome (681646186).

The spelling of 220323164 in words is "two hundred twenty million, three hundred twenty-three thousand, one hundred sixty-four".