2738644 has 12 divisors (see below), whose sum is σ = 4958100. Its totient is φ = 1322048.

The previous prime is 2738639. The next prime is 2738647. The reversal of 2738644 is 4468372.

2738644 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 883600 + 1855044 = 940^2 + 1362^2 .

It is a d-powerful number, because it can be written as 2¹³ + 7² + 3⁷ + 8 + 6⁸ + 4² + 4¹⁰ .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2738647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11689 + ... + 11920.

It is an arithmetic number, because the mean of its divisors is an integer number (413175).

2^2738644 is an apocalyptic number.

It is an amenable number.

2738644 is a deficient number, since it is larger than the sum of its proper divisors (2219456).

2738644 is a wasteful number, since it uses less digits than its factorization.

2738644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23642 (or 23640 counting only the distinct ones).

The product of its digits is 32256, while the sum is 34.

The square root of 2738644 is about 1654.8848902567. The cubic root of 2738644 is about 139.9088522353.

The spelling of 2738644 in words is "two million, seven hundred thirty-eight thousand, six hundred forty-four".