5215440 has 80 divisors (see below), whose sum is σ = 16713216. Its totient is φ = 1344000.

The previous prime is 5215433. The next prime is 5215451. The reversal of 5215440 is 445125.

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 pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7090 + ... + 7790.

Almost surely, 2^5215440 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 5215440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8356608).

5215440 is an abundant number, since it is smaller than the sum of its proper divisors (11497776).

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

5215440 is a wasteful number, since it uses less digits than its factorization.

5215440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 748 (or 742 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 21.

The square root of 5215440 is about 2283.7337848357. The cubic root of 5215440 is about 173.4191225557.

The spelling of 5215440 in words is "five million, two hundred fifteen thousand, four hundred forty".