2800265 has 16 divisors (see below), whose sum is σ = 3678528. Its totient is φ = 2033856.

The previous prime is 2800249. The next prime is 2800267. The reversal of 2800265 is 5620082.

It is a happy number.

2800265 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 2800265 - 2⁴ = 2800249 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 2800265.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2800267) 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 15 ways as a sum of consecutive naturals, for example, 4034 + ... + 4676.

It is an arithmetic number, because the mean of its divisors is an integer number (229908).

2^2800265 is an apocalyptic number.

It is an amenable number.

2800265 is a deficient number, since it is larger than the sum of its proper divisors (878263).

2800265 is a wasteful number, since it uses less digits than its factorization.

2800265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 728.

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 2800265 is about 1673.3992350901. The cubic root of 2800265 is about 140.9504210109.

The spelling of 2800265 in words is "two million, eight hundred thousand, two hundred sixty-five".