2116387 has 12 divisors (see below), whose sum is σ = 2620560. Its totient is φ = 1673568.

The previous prime is 2116357. The next prime is 2116393. The reversal of 2116387 is 7836112.

It is not a de Polignac number, because 2116387 - 2¹⁹ = 1592099 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2116307) 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, 289 + ... + 2077.

It is an arithmetic number, because the mean of its divisors is an integer number (218380).

2^2116387 is an apocalyptic number.

2116387 is a deficient number, since it is larger than the sum of its proper divisors (504173).

2116387 is a wasteful number, since it uses less digits than its factorization.

2116387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1822 (or 1809 counting only the distinct ones).

The product of its digits is 2016, while the sum is 28.

The square root of 2116387 is about 1454.7807394931. The cubic root of 2116387 is about 128.3901466933.

The spelling of 2116387 in words is "two million, one hundred sixteen thousand, three hundred eighty-seven".