2765243 has 8 divisors (see below), whose sum is σ = 2991408. Its totient is φ = 2541024.

The previous prime is 2765239. The next prime is 2765251. The reversal of 2765243 is 3425672.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2765243 - 2² = 2765239 is a prime.

It is an Ulam number.

It is a d-powerful number, because it can be written as 2¹⁴ + 7³ + 6⁸ + 5⁴ + 2²⁰ + 4² + 3⁹ .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2765233) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4205 + ... + 4817.

It is an arithmetic number, because the mean of its divisors is an integer number (373926).

2^2765243 is an apocalyptic number.

2765243 is a deficient number, since it is larger than the sum of its proper divisors (226165).

2765243 is a wasteful number, since it uses less digits than its factorization.

2765243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 973.

The product of its digits is 10080, while the sum is 29.

The square root of 2765243 is about 1662.9019814770. The cubic root of 2765243 is about 140.3603472136.

The spelling of 2765243 in words is "two million, seven hundred sixty-five thousand, two hundred forty-three".