7276728 has 32 divisors (see below), whose sum is σ = 18581760. Its totient is φ = 2373600.

The previous prime is 7276727. The next prime is 7276733. The reversal of 7276728 is 8276727.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7276727) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 2098 + ... + 4353.

It is an arithmetic number, because the mean of its divisors is an integer number (580680).

Almost surely, 2^7276728 is an apocalyptic number.

It is an amenable number.

7276728 is an abundant number, since it is smaller than the sum of its proper divisors (11305032).

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

7276728 is a wasteful number, since it uses less digits than its factorization.

7276728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6507 (or 6503 counting only the distinct ones).

The product of its digits is 65856, while the sum is 39.

The square root of 7276728 is about 2697.5411025599. The cubic root of 7276728 is about 193.7813812507.

Subtracting 7276728 from its reverse (8276727), we obtain a palindrome (999999).

The spelling of 7276728 in words is "seven million, two hundred seventy-six thousand, seven hundred twenty-eight".