2856205 has 12 divisors (see below), whose sum is σ = 3768156. Its totient is φ = 2076800.

The previous prime is 2856197. The next prime is 2856229. The reversal of 2856205 is 5026582.

2856205 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 2 ways, for example, as 1283689 + 1572516 = 1133^2 + 1254^2 .

It is not a de Polignac number, because 2856205 - 2³ = 2856197 is a prime.

It is a Duffinian number.

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 11 ways as a sum of consecutive naturals, for example, 1756 + ... + 2965.

It is an arithmetic number, because the mean of its divisors is an integer number (314013).

2^2856205 is an apocalyptic number.

It is an amenable number.

2856205 is a deficient number, since it is larger than the sum of its proper divisors (911951).

2856205 is a wasteful number, since it uses less digits than its factorization.

2856205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4748 (or 4737 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 28.

The square root of 2856205 is about 1690.0310648032. The cubic root of 2856205 is about 141.8828134544.

The spelling of 2856205 in words is "two million, eight hundred fifty-six thousand, two hundred five".