166320384 has 72 divisors (see below), whose sum is σ = 468730080. Its totient is φ = 52174848.

The previous prime is 166320361. The next prime is 166320389. The reversal of 166320384 is 483023661.

It is not an unprimeable number, because it can be changed into a prime (166320389) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6687 + ... + 19425.

It is an arithmetic number, because the mean of its divisors is an integer number (6510140).

Almost surely, 2^166320384 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 166320384, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (234365040).

166320384 is an abundant number, since it is smaller than the sum of its proper divisors (302409696).

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

166320384 is a wasteful number, since it uses less digits than its factorization.

166320384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12775 (or 12761 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 33.

The square root of 166320384 is about 12896.5260438616. The cubic root of 166320384 is about 549.9398104933.

The spelling of 166320384 in words is "one hundred sixty-six million, three hundred twenty thousand, three hundred eighty-four".