9640320 has 64 divisors (see below), whose sum is σ = 30734640. Its totient is φ = 2570240.

The previous prime is 9640303. The next prime is 9640321. The reversal of 9640320 is 230469.

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 (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9640321) 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, 591 + ... + 4430.

Almost surely, 2^9640320 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 9640320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15367320).

9640320 is an abundant number, since it is smaller than the sum of its proper divisors (21094320).

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

9640320 is a wasteful number, since it uses less digits than its factorization.

9640320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5043 (or 5031 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 24.

The square root of 9640320 is about 3104.8864713545. The cubic root of 9640320 is about 212.8288426430.

Adding to 9640320 its reverse (230469), we get a palindrome (9870789).

The spelling of 9640320 in words is "nine million, six hundred forty thousand, three hundred twenty".