2730243 has 12 divisors (see below), whose sum is σ = 3843528. Its totient is φ = 1723680.

The previous prime is 2730241. The next prime is 2730257. The reversal of 2730243 is 3420372.

It is a happy number.

It is not a de Polignac number, because 2730243 - 2¹ = 2730241 is a prime.

It is an Ulam number.

2730243 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2730241) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 178 + ... + 2343.

It is an arithmetic number, because the mean of its divisors is an integer number (320294).

2^2730243 is an apocalyptic number.

2730243 is a deficient number, since it is larger than the sum of its proper divisors (1113285).

2730243 is a wasteful number, since it uses less digits than its factorization.

2730243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2562 (or 2543 counting only the distinct ones).

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

The square root of 2730243 is about 1652.3446976948. The cubic root of 2730243 is about 139.7656453331.

The spelling of 2730243 in words is "two million, seven hundred thirty thousand, two hundred forty-three".