2856885 has 16 divisors (see below), whose sum is σ = 4593984. Its totient is φ = 1516032.

The previous prime is 2856883. The next prime is 2856923. The reversal of 2856885 is 5886582.

It is not a de Polignac number, because 2856885 - 2¹ = 2856883 is a prime.

2856885 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2856883) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3909 + ... + 4581.

It is an arithmetic number, because the mean of its divisors is an integer number (287124).

2^2856885 is an apocalyptic number.

It is an amenable number.

2856885 is a deficient number, since it is larger than the sum of its proper divisors (1737099).

2856885 is a wasteful number, since it uses less digits than its factorization.

2856885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 964.

The product of its digits is 153600, while the sum is 42.

The square root of 2856885 is about 1690.2322325645. The cubic root of 2856885 is about 141.8940722935.

It can be divided in two parts, 2856 and 885, that added together give a triangular number (3741 = T₈₆).

The spelling of 2856885 in words is "two million, eight hundred fifty-six thousand, eight hundred eighty-five".