8147868 has 12 divisors (see below), whose sum is σ = 19011720. Its totient is φ = 2715952.

The previous prime is 8147863. The next prime is 8147891. The reversal of 8147868 is 8687418.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8147863) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 339483 + ... + 339506.

It is an arithmetic number, because the mean of its divisors is an integer number (1584310).

Almost surely, 2^8147868 is an apocalyptic number.

It is an amenable number.

8147868 is an abundant number, since it is smaller than the sum of its proper divisors (10863852).

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

8147868 is a wasteful number, since it uses less digits than its factorization.

8147868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 678996 (or 678994 counting only the distinct ones).

The product of its digits is 86016, while the sum is 42.

The square root of 8147868 is about 2854.4470567870. The cubic root of 8147868 is about 201.2247183498.

The spelling of 8147868 in words is "eight million, one hundred forty-seven thousand, eight hundred sixty-eight".