5504640 has 128 divisors (see below), whose sum is σ = 18213120. Its totient is φ = 1413120.

The previous prime is 5504581. The next prime is 5504647. The reversal of 5504640 is 464055.

It is a tau number, because it is divible by the number of its divisors (128).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 5504640.

It is not an unprimeable number, because it can be changed into a prime (5504647) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 90210 + ... + 90270.

It is an arithmetic number, because the mean of its divisors is an integer number (142290).

Almost surely, 2^5504640 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 5504640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9106560).

5504640 is an abundant number, since it is smaller than the sum of its proper divisors (12708480).

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

5504640 is a wasteful number, since it uses less digits than its factorization.

5504640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130 (or 118 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 24.

The square root of 5504640 is about 2346.1969226815. The cubic root of 5504640 is about 176.5670416510.

Adding to 5504640 its reverse (464055), we get a palindrome (5968695).

The spelling of 5504640 in words is "five million, five hundred four thousand, six hundred forty".