2216004 has 96 divisors (see below), whose sum is σ = 6537216. Its totient is φ = 570240.

The previous prime is 2215999. The next prime is 2216021. The reversal of 2216004 is 4006122.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 59874 + ... + 59910.

It is an arithmetic number, because the mean of its divisors is an integer number (68096).

2^2216004 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 2216004, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3268608).

2216004 is an abundant number, since it is smaller than the sum of its proper divisors (4321212).

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

2216004 is a wasteful number, since it uses less digits than its factorization.

2216004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105 (or 103 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 2216004 is about 1488.6248687967. The cubic root of 2216004 is about 130.3737567473.

The spelling of 2216004 in words is "two million, two hundred sixteen thousand, four".