8040320 has 64 divisors (see below), whose sum is σ = 20379600. Its totient is φ = 3022848.

The previous prime is 8040311. The next prime is 8040323. The reversal of 8040320 is 230408.

It is a tau number, because it is divible by the number of its divisors (64).

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8040323) 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, 10511 + ... + 11249.

Almost surely, 2^8040320 is an apocalyptic number.

8040320 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 8040320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10189800).

8040320 is an abundant number, since it is smaller than the sum of its proper divisors (12339280).

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

8040320 is a wasteful number, since it uses less digits than its factorization.

8040320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 775 (or 763 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 8040320 is about 2835.5458028394. The cubic root of 8040320 is about 200.3354370953.

Adding to 8040320 its reverse (230408), we get a palindrome (8270728).

The spelling of 8040320 in words is "eight million, forty thousand, three hundred twenty".