5215728 has 120 divisors (see below), whose sum is σ = 16629888. Its totient is φ = 1378944.

The previous prime is 5215703. The next prime is 5215729. The reversal of 5215728 is 8275125.

It is a junction number, because it is equal to n+sod(n) for n = 5215695 and 5215704.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5215729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 121275 + ... + 121317.

Almost surely, 2^5215728 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 5215728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8314944).

5215728 is an abundant number, since it is smaller than the sum of its proper divisors (11414160).

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

5215728 is a wasteful number, since it uses less digits than its factorization.

5215728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99 (or 74 counting only the distinct ones).

The product of its digits is 5600, while the sum is 30.

The square root of 5215728 is about 2283.7968386001. The cubic root of 5215728 is about 173.4223146026.

The spelling of 5215728 in words is "five million, two hundred fifteen thousand, seven hundred twenty-eight".