164320212 has 48 divisors (see below), whose sum is σ = 452329472. Its totient is φ = 45433440.

The previous prime is 164320207. The next prime is 164320217. The reversal of 164320212 is 212023461.

It is an interprime number because it is at equal distance from previous prime (164320207) and next prime (164320217).

It is a super-2 number, since 2×164320212² = 54002264143449888, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164320217) 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, 28948 + ... + 34155.

Almost surely, 2^164320212 is an apocalyptic number.

164320212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

164320212 is an abundant number, since it is smaller than the sum of its proper divisors (288009260).

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

164320212 is a wasteful number, since it uses less digits than its factorization.

164320212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63148 (or 63146 counting only the distinct ones).

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

The square root of 164320212 is about 12818.7445563128. The cubic root of 164320212 is about 547.7263849767.

Adding to 164320212 its reverse (212023461), we get a palindrome (376343673).

The spelling of 164320212 in words is "one hundred sixty-four million, three hundred twenty thousand, two hundred twelve".