2160816 has 80 divisors (see below), whose sum is σ = 6547200. Its totient is φ = 601344.

The previous prime is 2160797. The next prime is 2160833. The reversal of 2160816 is 6180612.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19770 + ... + 19878.

It is an arithmetic number, because the mean of its divisors is an integer number (81840).

2^2160816 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2160816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3273600).

2160816 is an abundant number, since it is smaller than the sum of its proper divisors (4386384).

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

2160816 is a wasteful number, since it uses less digits than its factorization.

2160816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 186 (or 180 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 24.

The square root of 2160816 is about 1469.9714282938. The cubic root of 2160816 is about 129.2823573035.

The spelling of 2160816 in words is "two million, one hundred sixty thousand, eight hundred sixteen".