2851864 has 16 divisors (see below), whose sum is σ = 5400720. Its totient is φ = 1411680.

The previous prime is 2851861. The next prime is 2851867. The reversal of 2851864 is 4681582.

It is an interprime number because it is at equal distance from previous prime (2851861) and next prime (2851867).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2851861) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 907 + ... + 2554.

It is an arithmetic number, because the mean of its divisors is an integer number (337545).

2^2851864 is an apocalyptic number.

It is an amenable number.

2851864 is a deficient number, since it is larger than the sum of its proper divisors (2548856).

2851864 is a wasteful number, since it uses less digits than its factorization.

2851864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3570 (or 3566 counting only the distinct ones).

The product of its digits is 15360, while the sum is 34.

The square root of 2851864 is about 1688.7462805288. The cubic root of 2851864 is about 141.8108968625.

It can be divided in two parts, 28518 and 64, that added together give a palindrome (28582).

The spelling of 2851864 in words is "two million, eight hundred fifty-one thousand, eight hundred sixty-four".