8390816 has 48 divisors (see below), whose sum is σ = 19305216. Its totient is φ = 3515136.

The previous prime is 8390783. The next prime is 8390819. The reversal of 8390816 is 6180938.

It is not an unprimeable number, because it can be changed into a prime (8390819) 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, 10130 + ... + 10926.

It is an arithmetic number, because the mean of its divisors is an integer number (402192).

Almost surely, 2^8390816 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 8390816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9652608).

8390816 is an abundant number, since it is smaller than the sum of its proper divisors (10914400).

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

8390816 is a wasteful number, since it uses less digits than its factorization.

8390816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 861 (or 853 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 35.

The square root of 8390816 is about 2896.6905254100. The cubic root of 8390816 is about 203.2051603459.

The spelling of 8390816 in words is "eight million, three hundred ninety thousand, eight hundred sixteen".