2810864 has 20 divisors (see below), whose sum is σ = 6224304. Its totient is φ = 1204608.

The previous prime is 2810861. The next prime is 2810881. The reversal of 2810864 is 4680182.

It is a nialpdrome in base 13.

It is a zygodrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2810861) 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, 12437 + ... + 12660.

2^2810864 is an apocalyptic number.

It is an amenable number.

2810864 is an abundant number, since it is smaller than the sum of its proper divisors (3413440).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2810864 is a wasteful number, since it uses less digits than its factorization.

2810864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25112 (or 25106 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 29.

The square root of 2810864 is about 1676.5631512114. The cubic root of 2810864 is about 141.1280295135.

The spelling of 2810864 in words is "two million, eight hundred ten thousand, eight hundred sixty-four".