166666528 has 48 divisors (see below), whose sum is σ = 377806464. Its totient is φ = 70894080.

The previous prime is 166666481. The next prime is 166666547. The reversal of 166666528 is 825666661.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27973 + ... + 33403.

It is an arithmetic number, because the mean of its divisors is an integer number (7870968).

Almost surely, 2^166666528 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 166666528, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (188903232).

166666528 is an abundant number, since it is smaller than the sum of its proper divisors (211139936).

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

166666528 is a wasteful number, since it uses less digits than its factorization.

166666528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5585 (or 5577 counting only the distinct ones).

The product of its digits is 622080, while the sum is 46.

The square root of 166666528 is about 12909.9391168200. The cubic root of 166666528 is about 550.3210555266.

The spelling of 166666528 in words is "one hundred sixty-six million, six hundred sixty-six thousand, five hundred twenty-eight".