164321228 has 12 divisors (see below), whose sum is σ = 287704872. Its totient is φ = 82119840.

The previous prime is 164321219. The next prime is 164321231. The reversal of 164321228 is 822123461.

It is a happy number.

It is a super-3 number, since 3×164321228³ (a number of 26 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 164321228.

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, 8 + ... + 18128.

It is an arithmetic number, because the mean of its divisors is an integer number (23975406).

Almost surely, 2^164321228 is an apocalyptic number.

It is an amenable number.

164321228 is a deficient number, since it is larger than the sum of its proper divisors (123383644).

164321228 is a wasteful number, since it uses less digits than its factorization.

164321228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20392 (or 20390 counting only the distinct ones).

The product of its digits is 4608, while the sum is 29.

The square root of 164321228 is about 12818.7841857175. The cubic root of 164321228 is about 547.7275138475.

Adding to 164321228 its reverse (822123461), we get a palindrome (986444689).

The spelling of 164321228 in words is "one hundred sixty-four million, three hundred twenty-one thousand, two hundred twenty-eight".