2115872 has 24 divisors (see below), whose sum is σ = 4545072. Its totient is φ = 961600.

The previous prime is 2115863. The next prime is 2115877. The reversal of 2115872 is 2785112.

It is not an unprimeable number, because it can be changed into a prime (2115877) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2654 + ... + 3357.

It is an arithmetic number, because the mean of its divisors is an integer number (189378).

2^2115872 is an apocalyptic number.

2115872 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

2115872 is an abundant number, since it is smaller than the sum of its proper divisors (2429200).

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

2115872 is a wasteful number, since it uses less digits than its factorization.

2115872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6032 (or 6024 counting only the distinct ones).

The product of its digits is 1120, while the sum is 26.

The square root of 2115872 is about 1454.6037261055. The cubic root of 2115872 is about 128.3797317283.

The spelling of 2115872 in words is "two million, one hundred fifteen thousand, eight hundred seventy-two".