2820285 has 32 divisors (see below), whose sum is σ = 5402880. Its totient is φ = 1387584.

The previous prime is 2820271. The next prime is 2820313. The reversal of 2820285 is 5820282.

2820285 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2820285 - 2¹¹ = 2818237 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

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 31 ways as a sum of consecutive naturals, for example, 952 + ... + 2558.

It is an arithmetic number, because the mean of its divisors is an integer number (168840).

2^2820285 is an apocalyptic number.

It is an amenable number.

2820285 is a deficient number, since it is larger than the sum of its proper divisors (2582595).

2820285 is a wasteful number, since it uses less digits than its factorization.

2820285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1634 (or 1628 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 27.

The square root of 2820285 is about 1679.3704177459. The cubic root of 2820285 is about 141.2855237355.

The spelling of 2820285 in words is "two million, eight hundred twenty thousand, two hundred eighty-five".