166243312 has 80 divisors (see below), whose sum is σ = 356004000. Its totient is φ = 74898432.

The previous prime is 166243309. The next prime is 166243321. The reversal of 166243312 is 213342661.

166243312 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 960858 + ... + 961030.

It is an arithmetic number, because the mean of its divisors is an integer number (4450050).

Almost surely, 2^166243312 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 166243312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (178002000).

166243312 is an abundant number, since it is smaller than the sum of its proper divisors (189760688).

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

166243312 is a wasteful number, since it uses less digits than its factorization.

166243312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 338 (or 332 counting only the distinct ones).

The product of its digits is 5184, while the sum is 28.

The square root of 166243312 is about 12893.5376061033. The cubic root of 166243312 is about 549.8548509537.

Adding to 166243312 its reverse (213342661), we get a palindrome (379585973).

The spelling of 166243312 in words is "one hundred sixty-six million, two hundred forty-three thousand, three hundred twelve".