164672988 has 12 divisors (see below), whose sum is σ = 384237000. Its totient is φ = 54890992.

The previous prime is 164672971. The next prime is 164672993. The reversal of 164672988 is 889276461.

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 164672988.

It is a congruent number.

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, 6861363 + ... + 6861386.

It is an arithmetic number, because the mean of its divisors is an integer number (32019750).

Almost surely, 2^164672988 is an apocalyptic number.

It is an amenable number.

164672988 is an abundant number, since it is smaller than the sum of its proper divisors (219564012).

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

164672988 is a wasteful number, since it uses less digits than its factorization.

164672988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13722756 (or 13722754 counting only the distinct ones).

The product of its digits is 1161216, while the sum is 51.

The square root of 164672988 is about 12832.4973407361. The cubic root of 164672988 is about 548.1180726631.

The spelling of 164672988 in words is "one hundred sixty-four million, six hundred seventy-two thousand, nine hundred eighty-eight".