7886816 has 48 divisors (see below), whose sum is σ = 17944416. Its totient is φ = 3342336.

The previous prime is 7886797. The next prime is 7886819. The reversal of 7886816 is 6186887.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7886819) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30560 + ... + 30816.

It is an arithmetic number, because the mean of its divisors is an integer number (373842).

Almost surely, 2^7886816 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7886816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8972208).

7886816 is an abundant number, since it is smaller than the sum of its proper divisors (10057600).

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

7886816 is a wasteful number, since it uses less digits than its factorization.

7886816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 411 (or 403 counting only the distinct ones).

The product of its digits is 129024, while the sum is 44.

The square root of 7886816 is about 2808.3475568384. The cubic root of 7886816 is about 199.0523165733.

The spelling of 7886816 in words is "seven million, eight hundred eighty-six thousand, eight hundred sixteen".