2115873 has 12 divisors (see below), whose sum is σ = 3072420. Its totient is φ = 1403136.

The previous prime is 2115863. The next prime is 2115877. The reversal of 2115873 is 3785112.

It can be written as a sum of positive squares in 2 ways, for example, as 535824 + 1580049 = 732^2 + 1257^2 .

It is not a de Polignac number, because 2115873 - 2¹⁶ = 2050337 is a prime.

It is a congruent number.

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

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1593 + ... + 2601.

It is an arithmetic number, because the mean of its divisors is an integer number (256035).

2^2115873 is an apocalyptic number.

It is an amenable number.

2115873 is a deficient number, since it is larger than the sum of its proper divisors (956547).

2115873 is a wasteful number, since it uses less digits than its factorization.

2115873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1248 (or 1245 counting only the distinct ones).

The product of its digits is 1680, while the sum is 27.

The square root of 2115873 is about 1454.6040698417. The cubic root of 2115873 is about 128.3797519532.

It can be divided in two parts, 211 and 5873, that added together give a square (6084 = 78²).

The spelling of 2115873 in words is "two million, one hundred fifteen thousand, eight hundred seventy-three".