2780285 has 8 divisors (see below), whose sum is σ = 3407616. Its totient is φ = 2176720.

The previous prime is 2780273. The next prime is 2780303. The reversal of 2780285 is 5820872.

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

It is not a de Polignac number, because 2780285 - 2¹⁰ = 2779261 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5681 + ... + 6150.

It is an arithmetic number, because the mean of its divisors is an integer number (425952).

2^2780285 is an apocalyptic number.

It is an amenable number.

2780285 is a deficient number, since it is larger than the sum of its proper divisors (627331).

2780285 is a wasteful number, since it uses less digits than its factorization.

2780285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11883.

The product of its (nonzero) digits is 8960, while the sum is 32.

The square root of 2780285 is about 1667.4186636835. The cubic root of 2780285 is about 140.6143916277.

The spelling of 2780285 in words is "two million, seven hundred eighty thousand, two hundred eighty-five".