5304640 has 84 divisors (see below), whose sum is σ = 13985748. Its totient is φ = 1914880.

The previous prime is 5304617. The next prime is 5304641. The reversal of 5304640 is 464035.

It can be written as a sum of positive squares in 2 ways, for example, as 2509056 + 2795584 = 1584^2 + 1672^2 .

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5304641) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 38652 + ... + 38788.

It is an arithmetic number, because the mean of its divisors is an integer number (166497).

Almost surely, 2^5304640 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 5304640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6992874).

5304640 is an abundant number, since it is smaller than the sum of its proper divisors (8681108).

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

5304640 is a wasteful number, since it uses less digits than its factorization.

5304640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176 (or 155 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 5304640 is about 2303.1804097812. The cubic root of 5304640 is about 174.4022051737.

Adding to 5304640 its reverse (464035), we get a palindrome (5768675).

The spelling of 5304640 in words is "five million, three hundred four thousand, six hundred forty".