2169216 has 96 divisors (see below), whose sum is σ = 7160400. Its totient is φ = 617472.

The previous prime is 2169203. The next prime is 2169227. The reversal of 2169216 is 6129612.

It is a tau number, because it is divible by the number of its divisors (96).

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

It is an alternating number because its digits alternate between even and odd.

It is a nialpdrome in base 12.

It is a self number, because there is not a number n which added to its sum of digits gives 2169216.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7930 + ... + 8198.

2^2169216 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 2169216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3580200).

2169216 is an abundant number, since it is smaller than the sum of its proper divisors (4991184).

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

2169216 is a wasteful number, since it uses less digits than its factorization.

2169216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 296 (or 281 counting only the distinct ones).

The product of its digits is 1296, while the sum is 27.

The square root of 2169216 is about 1472.8258552864. The cubic root of 2169216 is about 129.4496656449.

The spelling of 2169216 in words is "two million, one hundred sixty-nine thousand, two hundred sixteen".