2811873 has 8 divisors (see below), whose sum is σ = 3784000. Its totient is φ = 1857168.

The previous prime is 2811871. The next prime is 2811877. The reversal of 2811873 is 3781182.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2811873 - 2¹ = 2811871 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2811873.

It is not an unprimeable number, because it can be changed into a prime (2811871) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3973 + ... + 4626.

It is an arithmetic number, because the mean of its divisors is an integer number (473000).

2^2811873 is an apocalyptic number.

It is an amenable number.

2811873 is a deficient number, since it is larger than the sum of its proper divisors (972127).

2811873 is a wasteful number, since it uses less digits than its factorization.

2811873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8711.

The product of its digits is 2688, while the sum is 30.

The square root of 2811873 is about 1676.8640374222. The cubic root of 2811873 is about 141.1449141376.

The spelling of 2811873 in words is "two million, eight hundred eleven thousand, eight hundred seventy-three".