168215982 has 32 divisors (see below), whose sum is σ = 378860544. Its totient is φ = 49329600.

The previous prime is 168215977. The next prime is 168216019. The reversal of 168215982 is 289512861.

It is a happy number.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 39063 + ... + 43154.

It is an arithmetic number, because the mean of its divisors is an integer number (11839392).

Almost surely, 2^168215982 is an apocalyptic number.

168215982 is an abundant number, since it is smaller than the sum of its proper divisors (210644562).

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

168215982 is a wasteful number, since it uses less digits than its factorization.

168215982 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82264.

The product of its digits is 69120, while the sum is 42.

The square root of 168215982 is about 12969.8104072496. The cubic root of 168215982 is about 552.0211935257.

The spelling of 168215982 in words is "one hundred sixty-eight million, two hundred fifteen thousand, nine hundred eighty-two".