2643344 has 40 divisors (see below), whose sum is σ = 5838912. Its totient is φ = 1147520.

The previous prime is 2643343. The next prime is 2643349. The reversal of 2643344 is 4433462.

It is a d-powerful number, because it can be written as 2⁷ + 6 + 4 + 3⁵ + 3¹³ + 4³ + 4¹⁰ .

It is not an unprimeable number, because it can be changed into a prime (2643341) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3722 + ... + 4374.

2^2643344 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 2643344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2919456).

2643344 is an abundant number, since it is smaller than the sum of its proper divisors (3195568).

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

2643344 is a wasteful number, since it uses less digits than its factorization.

2643344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 695 (or 689 counting only the distinct ones).

The product of its digits is 6912, while the sum is 26.

The square root of 2643344 is about 1625.8364001338. The cubic root of 2643344 is about 138.2667946640.

It can be divided in two parts, 2 and 643344, that added together give a palindrome (643346).

The spelling of 2643344 in words is "two million, six hundred forty-three thousand, three hundred forty-four".