2740323 has 4 divisors (see below), whose sum is σ = 3653768. Its totient is φ = 1826880.

The previous prime is 2740319. The next prime is 2740333. The reversal of 2740323 is 3230472.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 2740323 - 2² = 2740319 is a prime.

It is a D-number.

It is a Duffinian number.

2740323 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 2740323.

It is not an unprimeable number, because it can be changed into a prime (2740333) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 456718 + ... + 456723.

It is an arithmetic number, because the mean of its divisors is an integer number (913442).

2^2740323 is an apocalyptic number.

2740323 is a deficient number, since it is larger than the sum of its proper divisors (913445).

2740323 is an equidigital number, since it uses as much as digits as its factorization.

2740323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 913444.

The product of its (nonzero) digits is 1008, while the sum is 21.

The square root of 2740323 is about 1655.3920985676. The cubic root of 2740323 is about 139.9374380334.

Adding to 2740323 its reverse (3230472), we get a palindrome (5970795).

The spelling of 2740323 in words is "two million, seven hundred forty thousand, three hundred twenty-three".