8123320 has 32 divisors (see below), whose sum is σ = 18364320. Its totient is φ = 3233920.

The previous prime is 8123303. The next prime is 8123321. The reversal of 8123320 is 233218.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8123321) 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, 12114 + ... + 12766.

It is an arithmetic number, because the mean of its divisors is an integer number (573885).

Almost surely, 2^8123320 is an apocalyptic number.

It is an amenable number.

8123320 is an abundant number, since it is smaller than the sum of its proper divisors (10241000).

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

8123320 is a wasteful number, since it uses less digits than its factorization.

8123320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 975 (or 971 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 8123320 is about 2850.1438560185. The cubic root of 8123320 is about 201.0224309348.

Adding to 8123320 its reverse (233218), we get a palindrome (8356538).

The spelling of 8123320 in words is "eight million, one hundred twenty-three thousand, three hundred twenty".