166017040 has 80 divisors (see below), whose sum is σ = 446221440. Its totient is φ = 56263680.

The previous prime is 166017029. The next prime is 166017073. The reversal of 166017040 is 40710661.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

It is a junction number, because it is equal to n+sod(n) for n = 166016996 and 166017014.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48175 + ... + 51505.

It is an arithmetic number, because the mean of its divisors is an integer number (5577768).

Almost surely, 2^166017040 is an apocalyptic number.

166017040 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 166017040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (223110720).

166017040 is an abundant number, since it is smaller than the sum of its proper divisors (280204400).

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

166017040 is a wasteful number, since it uses less digits than its factorization.

166017040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3440 (or 3434 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 25.

The square root of 166017040 is about 12884.7599900037. The cubic root of 166017040 is about 549.6052704934.

The spelling of 166017040 in words is "one hundred sixty-six million, seventeen thousand, forty".