5424240 has 80 divisors (see below), whose sum is σ = 17061408. Its totient is φ = 1425408.

The previous prime is 5424233. The next prime is 5424257. The reversal of 5424240 is 424245.

It is a Cunningham number, because it is equal to 2329²-1.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23164 + ... + 23396.

Almost surely, 2^5424240 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 5424240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8530704).

5424240 is an abundant number, since it is smaller than the sum of its proper divisors (11637168).

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

5424240 is a wasteful number, since it uses less digits than its factorization.

5424240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 346 (or 340 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 21.

The square root of 5424240 is about 2328.9997853156. Note that the first 3 decimals coincide. The cubic root of 5424240 is about 175.7031842887.

Adding to 5424240 its reverse (424245), we get a palindrome (5848485).

The spelling of 5424240 in words is "five million, four hundred twenty-four thousand, two hundred forty".