2216740 has 48 divisors (see below), whose sum is σ = 4999680. Its totient is φ = 823680.

The previous prime is 2216729. The next prime is 2216743. The reversal of 2216740 is 476122.

It is not an unprimeable number, because it can be changed into a prime (2216743) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28021 + ... + 28099.

It is an arithmetic number, because the mean of its divisors is an integer number (104160).

2^2216740 is an apocalyptic number.

2216740 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 2216740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2499840).

2216740 is an abundant number, since it is smaller than the sum of its proper divisors (2782940).

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

2216740 is a wasteful number, since it uses less digits than its factorization.

2216740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172 (or 170 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 22.

The square root of 2216740 is about 1488.8720562896. The cubic root of 2216740 is about 130.3881888006.

The spelling of 2216740 in words is "two million, two hundred sixteen thousand, seven hundred forty".