166116440 has 32 divisors (see below), whose sum is σ = 427157280. Its totient is φ = 56954112.

The previous prime is 166116343. The next prime is 166116463. The reversal of 166116440 is 44611661.

It is a congruent number.

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, 296357 + ... + 296916.

It is an arithmetic number, because the mean of its divisors is an integer number (13348665).

Almost surely, 2^166116440 is an apocalyptic number.

166116440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

166116440 is an abundant number, since it is smaller than the sum of its proper divisors (261040840).

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

166116440 is a wasteful number, since it uses less digits than its factorization.

166116440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 593291 (or 593287 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 166116440 is about 12888.6166829493. The cubic root of 166116440 is about 549.7149376786.

The spelling of 166116440 in words is "one hundred sixty-six million, one hundred sixteen thousand, four hundred forty".