2216940 has 48 divisors (see below), whose sum is σ = 6773760. Its totient is φ = 537280.

The previous prime is 2216917. The next prime is 2216941. The reversal of 2216940 is 496122.

It is a self number, because there is not a number n which added to its sum of digits gives 2216940.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2216941) 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, 1020 + ... + 2339.

It is an arithmetic number, because the mean of its divisors is an integer number (141120).

2^2216940 is an apocalyptic number.

2216940 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2216940 is an abundant number, since it is smaller than the sum of its proper divisors (4556820).

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

2216940 is a wasteful number, since it uses less digits than its factorization.

2216940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3382 (or 3380 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 2216940 is about 1488.9392197131. The cubic root of 2216940 is about 130.3921100022.

The spelling of 2216940 in words is "two million, two hundred sixteen thousand, nine hundred forty".