216740160 has 336 divisors, whose sum is σ = 918642816. Its totient is φ = 45674496.

The previous prime is 216740159. The next prime is 216740177. The reversal of 216740160 is 61047612.

It is a tau number, because it is divible by the number of its divisors (336).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 261667 + ... + 262493.

It is an arithmetic number, because the mean of its divisors is an integer number (2734056).

Almost surely, 2^216740160 is an apocalyptic number.

216740160 is a gapful number since it is divisible by the number (20) 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 216740160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (459321408).

216740160 is an abundant number, since it is smaller than the sum of its proper divisors (701902656).

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

216740160 is a wasteful number, since it uses less digits than its factorization.

216740160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 870 (or 857 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The square root of 216740160 is about 14722.0976766220. The cubic root of 216740160 is about 600.6845520172.

Adding to 216740160 its reverse (61047612), we get a palindrome (277787772).

The spelling of 216740160 in words is "two hundred sixteen million, seven hundred forty thousand, one hundred sixty".