164022220 has 12 divisors (see below), whose sum is σ = 344446704. Its totient is φ = 65608880.

The previous prime is 164022203. The next prime is 164022241. The reversal of 164022220 is 22220461.

164022220 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4100536 + ... + 4100575.

It is an arithmetic number, because the mean of its divisors is an integer number (28703892).

Almost surely, 2^164022220 is an apocalyptic number.

164022220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

164022220 is an abundant number, since it is smaller than the sum of its proper divisors (180424484).

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

164022220 is a wasteful number, since it uses less digits than its factorization.

164022220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8201120 (or 8201118 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 164022220 is about 12807.1159907295. The cubic root of 164022220 is about 547.3950870333.

Adding to 164022220 its reverse (22220461), we get a palindrome (186242681).

The spelling of 164022220 in words is "one hundred sixty-four million, twenty-two thousand, two hundred twenty".