2788265 has 8 divisors (see below), whose sum is σ = 3381000. Its totient is φ = 2207232.

The previous prime is 2788217. The next prime is 2788273. The reversal of 2788265 is 5628872.

2788265 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 2704 + 2785561 = 52^2 + 1669^2 .

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 2788265 - 2¹² = 2784169 is a prime.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 2390 + ... + 3359.

It is an arithmetic number, because the mean of its divisors is an integer number (422625).

2^2788265 is an apocalyptic number.

It is an amenable number.

2788265 is a deficient number, since it is larger than the sum of its proper divisors (592735).

2788265 is an equidigital number, since it uses as much as digits as its factorization.

2788265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5851.

The product of its digits is 53760, while the sum is 38.

The square root of 2788265 is about 1669.8098694163. The cubic root of 2788265 is about 140.7487940358.

The spelling of 2788265 in words is "two million, seven hundred eighty-eight thousand, two hundred sixty-five".