8320788 has 108 divisors (see below), whose sum is σ = 25208820. Its totient is φ = 2306304.

The previous prime is 8320783. The next prime is 8320789. The reversal of 8320788 is 8870238.

It can be written as a sum of positive squares in 2 ways, for example, as 3732624 + 4588164 = 1932^2 + 2142^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8320783) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 93448 + ... + 93536.

It is an arithmetic number, because the mean of its divisors is an integer number (233415).

Almost surely, 2^8320788 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 8320788, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12604410).

8320788 is an abundant number, since it is smaller than the sum of its proper divisors (16888032).

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

8320788 is a wasteful number, since it uses less digits than its factorization.

8320788 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166 (or 154 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 36.

The square root of 8320788 is about 2884.5776120604. The cubic root of 8320788 is about 202.6382777545.

The spelling of 8320788 in words is "eight million, three hundred twenty thousand, seven hundred eighty-eight".