7818916 has 24 divisors (see below), whose sum is σ = 15906240. Its totient is φ = 3293472.

The previous prime is 7818907. The next prime is 7818949. The reversal of 7818916 is 6198187.

It is a super-2 number, since 2×7818916² = 122270894830112, which contains 22 as substring.

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 715 + ... + 4018.

It is an arithmetic number, because the mean of its divisors is an integer number (662760).

Almost surely, 2^7818916 is an apocalyptic number.

It is an amenable number.

7818916 is an abundant number, since it is smaller than the sum of its proper divisors (8087324).

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

7818916 is a wasteful number, since it uses less digits than its factorization.

7818916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4803 (or 4801 counting only the distinct ones).

The product of its digits is 24192, while the sum is 40.

The square root of 7818916 is about 2796.2324653004. The cubic root of 7818916 is about 198.4794353805.

The spelling of 7818916 in words is "seven million, eight hundred eighteen thousand, nine hundred sixteen".