166260240 has 180 divisors, whose sum is σ = 580798764. Its totient is φ = 42591744.

The previous prime is 166260229. The next prime is 166260253. The reversal of 166260240 is 42062661.

It is a happy number.

166260240 is a `hidden beast` number, since 16 + 6 + 2 + 602 + 40 = 666.

166260240 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 108743184 + 57517056 = 10428^2 + 7584^2 .

It is a tau number, because it is divible by the number of its divisors (180).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 2104521 + ... + 2104599.

Almost surely, 2^166260240 is an apocalyptic number.

166260240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 166260240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (290399382).

166260240 is an abundant number, since it is smaller than the sum of its proper divisors (414538524).

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

166260240 is a wasteful number, since it uses less digits than its factorization.

166260240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214 (or 126 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 166260240 is about 12894.1940422812. The cubic root of 166260240 is about 549.8735136132.

The spelling of 166260240 in words is "one hundred sixty-six million, two hundred sixty thousand, two hundred forty".