168780216 has 64 divisors (see below), whose sum is σ = 487399680. Its totient is φ = 48135680.

The previous prime is 168780193. The next prime is 168780221. The reversal of 168780216 is 612087861.

It is a super-2 number, since 2×168780216² = 56973522626013312, which contains 22 as substring.

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, 14316 + ... + 23291.

It is an arithmetic number, because the mean of its divisors is an integer number (7615620).

Almost surely, 2^168780216 is an apocalyptic number.

It is an amenable number.

168780216 is an abundant number, since it is smaller than the sum of its proper divisors (318619464).

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

168780216 is a wasteful number, since it uses less digits than its factorization.

168780216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37644 (or 37640 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 39.

The square root of 168780216 is about 12991.5440190918. The cubic root of 168780216 is about 552.6377055523.

The spelling of 168780216 in words is "one hundred sixty-eight million, seven hundred eighty thousand, two hundred sixteen".