2723291 has 4 divisors (see below), whose sum is σ = 2727000. Its totient is φ = 2719584.

The previous prime is 2723249. The next prime is 2723293. The reversal of 2723291 is 1923272.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2723291 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2723291.

It is not an unprimeable number, because it can be changed into a prime (2723293) 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 3 ways as a sum of consecutive naturals, for example, 341 + ... + 2358.

It is an arithmetic number, because the mean of its divisors is an integer number (681750).

2^2723291 is an apocalyptic number.

2723291 is a deficient number, since it is larger than the sum of its proper divisors (3709).

2723291 is a wasteful number, since it uses less digits than its factorization.

2723291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3708.

The product of its digits is 1512, while the sum is 26.

The square root of 2723291 is about 1650.2396795617. The cubic root of 2723291 is about 139.6469163851.

The spelling of 2723291 in words is "two million, seven hundred twenty-three thousand, two hundred ninety-one".