2216560 has 40 divisors (see below), whose sum is σ = 5222880. Its totient is φ = 874752.

The previous prime is 2216551. The next prime is 2216563. The reversal of 2216560 is 656122.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2216563) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8106 + ... + 8374.

It is an arithmetic number, because the mean of its divisors is an integer number (130572).

2^2216560 is an apocalyptic number.

2216560 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 2216560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2611440).

2216560 is an abundant number, since it is smaller than the sum of its proper divisors (3006320).

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

2216560 is a wasteful number, since it uses less digits than its factorization.

2216560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 385 (or 379 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 2216560 is about 1488.8116066178. The cubic root of 2216560 is about 130.3846595175.

The spelling of 2216560 in words is "two million, two hundred sixteen thousand, five hundred sixty".