7871115 has 24 divisors (see below), whose sum is σ = 14651280. Its totient is φ = 3597888.

The previous prime is 7871113. The next prime is 7871141. The reversal of 7871115 is 5111787.

It is a happy number.

7871115 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 7871115 - 2¹ = 7871113 is a prime.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (7871113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4620 + ... + 6089.

It is an arithmetic number, because the mean of its divisors is an integer number (610470).

Almost surely, 2^7871115 is an apocalyptic number.

7871115 is a deficient number, since it is larger than the sum of its proper divisors (6780165).

7871115 is a wasteful number, since it uses less digits than its factorization.

7871115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10731 (or 10724 counting only the distinct ones).

The product of its digits is 1960, while the sum is 30.

The square root of 7871115 is about 2805.5507480707. The cubic root of 7871115 is about 198.9201383207.

The spelling of 7871115 in words is "seven million, eight hundred seventy-one thousand, one hundred fifteen".