168489216 has 216 divisors, whose sum is σ = 574805504. Its totient is φ = 46448640.

The previous prime is 168489203. The next prime is 168489263. The reversal of 168489216 is 612984861.

168489216 is a `hidden beast` number, since 168 + 489 + 2 + 1 + 6 = 666.

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 499800 + ... + 500136.

Almost surely, 2^168489216 is an apocalyptic number.

168489216 is a gapful number since it is divisible by the number (16) 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 168489216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (287402752).

168489216 is an abundant number, since it is smaller than the sum of its proper divisors (406316288).

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

168489216 is a wasteful number, since it uses less digits than its factorization.

168489216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 397 (or 380 counting only the distinct ones).

The product of its digits is 165888, while the sum is 45.

The square root of 168489216 is about 12980.3395949413. The cubic root of 168489216 is about 552.3199153742.

The spelling of 168489216 in words is "one hundred sixty-eight million, four hundred eighty-nine thousand, two hundred sixteen".