2811872 has 24 divisors (see below), whose sum is σ = 6327216. Its totient is φ = 1204992.

The previous prime is 2811871. The next prime is 2811877. The reversal of 2811872 is 2781182.

2811872 is digitally balanced in base 8, because in such base it contains all the possibile digits an equal number of times.

It is a nude number because it is divisible by every one of its digits.

2811872 is strictly pandigital in base 8.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2811871) 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, 6053 + ... + 6500.

It is an arithmetic number, because the mean of its divisors is an integer number (263634).

2^2811872 is an apocalyptic number.

It is an amenable number.

2811872 is an abundant number, since it is smaller than the sum of its proper divisors (3515344).

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

2811872 is a wasteful number, since it uses less digits than its factorization.

2811872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12570 (or 12562 counting only the distinct ones).

The product of its digits is 1792, while the sum is 29.

The square root of 2811872 is about 1676.8637392466. The cubic root of 2811872 is about 141.1448974056.

The spelling of 2811872 in words is "two million, eight hundred eleven thousand, eight hundred seventy-two".