7284728 has 16 divisors (see below), whose sum is σ = 14900760. Its totient is φ = 3311200.

The previous prime is 7284689. The next prime is 7284749. The reversal of 7284728 is 8274827.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 7284691 and 7284700.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41303 + ... + 41478.

Almost surely, 2^7284728 is an apocalyptic number.

It is an amenable number.

7284728 is an abundant number, since it is smaller than the sum of its proper divisors (7616032).

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

7284728 is a wasteful number, since it uses less digits than its factorization.

7284728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82798 (or 82794 counting only the distinct ones).

The product of its digits is 50176, while the sum is 38.

The square root of 7284728 is about 2699.0235271298. The cubic root of 7284728 is about 193.8523693506.

Subtracting 7284728 from its reverse (8274827), we obtain a palindrome (990099).

The spelling of 7284728 in words is "seven million, two hundred eighty-four thousand, seven hundred twenty-eight".