164223012 has 12 divisors (see below), whose sum is σ = 383187056. Its totient is φ = 54741000.

The previous prime is 164223011. The next prime is 164223047. The reversal of 164223012 is 210322461.

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 164223012.

It is not an unprimeable number, because it can be changed into a prime (164223011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6842614 + ... + 6842637.

Almost surely, 2^164223012 is an apocalyptic number.

164223012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

164223012 is an abundant number, since it is smaller than the sum of its proper divisors (218964044).

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

164223012 is a wasteful number, since it uses less digits than its factorization.

164223012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13685258 (or 13685256 counting only the distinct ones).

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

The square root of 164223012 is about 12814.9526725618. The cubic root of 164223012 is about 547.6183651844.

Adding to 164223012 its reverse (210322461), we get a palindrome (374545473).

The spelling of 164223012 in words is "one hundred sixty-four million, two hundred twenty-three thousand, twelve".