2644216 has 16 divisors (see below), whose sum is σ = 5007600. Its totient is φ = 1308864.

The previous prime is 2644183. The next prime is 2644219. The reversal of 2644216 is 6124462.

2644216 = 399² + 400² + ... + 414².

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2644219) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 781 + ... + 2428.

It is an arithmetic number, because the mean of its divisors is an integer number (312975).

2^2644216 is an apocalyptic number.

It is an amenable number.

2644216 is a deficient number, since it is larger than the sum of its proper divisors (2363384).

2644216 is a wasteful number, since it uses less digits than its factorization.

2644216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3318 (or 3314 counting only the distinct ones).

The product of its digits is 2304, while the sum is 25.

The square root of 2644216 is about 1626.1045476844. The cubic root of 2644216 is about 138.2819970477.

Adding to 2644216 its reverse (6124462), we get a palindrome (8768678).

The spelling of 2644216 in words is "two million, six hundred forty-four thousand, two hundred sixteen".