8242320 has 80 divisors (see below), whose sum is σ = 26016192. Its totient is φ = 2158080.

The previous prime is 8242309. The next prime is 8242327. The reversal of 8242320 is 232428.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8242327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14359 + ... + 14921.

Almost surely, 2^8242320 is an apocalyptic number.

8242320 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8242320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13008096).

8242320 is an abundant number, since it is smaller than the sum of its proper divisors (17773872).

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

8242320 is a wasteful number, since it uses less digits than its factorization.

8242320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 640 (or 634 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 8242320 is about 2870.9440955895. The cubic root of 8242320 is about 201.9992811137. Note that the first 3 decimals are identical.

Adding to 8242320 its reverse (232428), we get a palindrome (8474748).

The spelling of 8242320 in words is "eight million, two hundred forty-two thousand, three hundred twenty".