168816372 has 12 divisors (see below), whose sum is σ = 393904896. Its totient is φ = 56272120.

The previous prime is 168816371. The next prime is 168816383. The reversal of 168816372 is 273618861.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168816371) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7034004 + ... + 7034027.

It is an arithmetic number, because the mean of its divisors is an integer number (32825408).

Almost surely, 2^168816372 is an apocalyptic number.

168816372 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

168816372 is an abundant number, since it is smaller than the sum of its proper divisors (225088524).

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

168816372 is a wasteful number, since it uses less digits than its factorization.

168816372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14068038 (or 14068036 counting only the distinct ones).

The product of its digits is 96768, while the sum is 42.

The square root of 168816372 is about 12992.9354650903. The cubic root of 168816372 is about 552.6771646444.

The spelling of 168816372 in words is "one hundred sixty-eight million, eight hundred sixteen thousand, three hundred seventy-two".