2790243 has 6 divisors (see below), whose sum is σ = 4030364. Its totient is φ = 1860156.

The previous prime is 2790233. The next prime is 2790251. The reversal of 2790243 is 3420972.

2790243 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-2790243 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2790223) 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 5 ways as a sum of consecutive naturals, for example, 155005 + ... + 155022.

2^2790243 is an apocalyptic number.

2790243 is a deficient number, since it is larger than the sum of its proper divisors (1240121).

2790243 is a wasteful number, since it uses less digits than its factorization.

2790243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 310033 (or 310030 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 27.

The square root of 2790243 is about 1670.4020474125. The cubic root of 2790243 is about 140.7820686477.

The spelling of 2790243 in words is "two million, seven hundred ninety thousand, two hundred forty-three".