9040320 has 168 divisors, whose sum is σ = 32253936. Its totient is φ = 2322432.

The previous prime is 9040307. The next prime is 9040331. The reversal of 9040320 is 230409.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 9040293 and 9040302.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 123804 + ... + 123876.

Almost surely, 2^9040320 is an apocalyptic number.

9040320 is a gapful number since it is divisible by the number (90) 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 9040320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16126968).

9040320 is an abundant number, since it is smaller than the sum of its proper divisors (23213616).

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

9040320 is a wasteful number, since it uses less digits than its factorization.

9040320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139 (or 126 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 9040320 is about 3006.7124904121. The cubic root of 9040320 is about 208.3185454392.

Adding to 9040320 its reverse (230409), we get a palindrome (9270729).

The spelling of 9040320 in words is "nine million, forty thousand, three hundred twenty".