2216580 has 24 divisors (see below), whose sum is σ = 6206592. Its totient is φ = 591072.

The previous prime is 2216569. The next prime is 2216587. The reversal of 2216580 is 856122.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 2216580.

It is not an unprimeable number, because it can be changed into a prime (2216587) 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, 18412 + ... + 18531.

It is an arithmetic number, because the mean of its divisors is an integer number (258608).

2^2216580 is an apocalyptic number.

2216580 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2216580 is an abundant number, since it is smaller than the sum of its proper divisors (3990012).

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

2216580 is a wasteful number, since it uses less digits than its factorization.

2216580 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36955 (or 36953 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 24.

The square root of 2216580 is about 1488.8183233692. The cubic root of 2216580 is about 130.3850516695.

The spelling of 2216580 in words is "two million, two hundred sixteen thousand, five hundred eighty".