2721244 has 12 divisors (see below), whose sum is σ = 4926600. Its totient is φ = 1313648.

The previous prime is 2721227. The next prime is 2721247. The reversal of 2721244 is 4421272.

It is a happy number.

2721244 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2721247) 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, 11614 + ... + 11845.

It is an arithmetic number, because the mean of its divisors is an integer number (410550).

2^2721244 is an apocalyptic number.

It is an amenable number.

2721244 is a deficient number, since it is larger than the sum of its proper divisors (2205356).

2721244 is a wasteful number, since it uses less digits than its factorization.

2721244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23492 (or 23490 counting only the distinct ones).

The product of its digits is 896, while the sum is 22.

The square root of 2721244 is about 1649.6193500320. The cubic root of 2721244 is about 139.6119184248.

The spelling of 2721244 in words is "two million, seven hundred twenty-one thousand, two hundred forty-four".