2816244 has 18 divisors (see below), whose sum is σ = 7118930. Its totient is φ = 938736.

The previous prime is 2816243. The next prime is 2816251. The reversal of 2816244 is 4426182.

It can be written as a sum of positive squares in only one way, i.e., 2624400 + 191844 = 1620^2 + 438^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2816243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 39079 + ... + 39150.

2^2816244 is an apocalyptic number.

It is an amenable number.

2816244 is an abundant number, since it is smaller than the sum of its proper divisors (4302686).

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

2816244 is a wasteful number, since it uses less digits than its factorization.

2816244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78239 (or 78234 counting only the distinct ones).

The product of its digits is 3072, while the sum is 27.

The square root of 2816244 is about 1678.1668570199. The cubic root of 2816244 is about 141.2180119174.

The spelling of 2816244 in words is "two million, eight hundred sixteen thousand, two hundred forty-four".