727628 has 24 divisors (see below), whose sum is σ = 1451520. Its totient is φ = 315920.

The previous prime is 727621. The next prime is 727633. The reversal of 727628 is 826727.

It is a junction number, because it is equal to n+sod(n) for n = 727594 and 727603.

It is not an unprimeable number, because it can be changed into a prime (727621) by changing a digit.

727628 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 653 + ... + 1371.

It is an arithmetic number, because the mean of its divisors is an integer number (60480).

2⁷²⁷⁶²⁸ is an apocalyptic number.

It is an amenable number.

727628 is a deficient number, since it is larger than the sum of its proper divisors (723892).

727628 is a wasteful number, since it uses less digits than its factorization.

727628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 757 (or 755 counting only the distinct ones).

The product of its digits is 9408, while the sum is 32.

The square root of 727628 is about 853.0111370902. The cubic root of 727628 is about 89.9435036372.

Subtracting 727628 from its reverse (826727), we obtain a palindrome (99099).

The spelling of 727628 in words is "seven hundred twenty-seven thousand, six hundred twenty-eight".