728049 has 16 divisors (see below), whose sum is σ = 1140608. Its totient is φ = 404352.

The previous prime is 728047. The next prime is 728069. The reversal of 728049 is 940827.

It is not a de Polignac number, because 728049 - 2¹ = 728047 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (728047) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 309 + ... + 1245.

It is an arithmetic number, because the mean of its divisors is an integer number (71288).

2⁷²⁸⁰⁴⁹ is an apocalyptic number.

It is an amenable number.

728049 is a deficient number, since it is larger than the sum of its proper divisors (412559).

728049 is a wasteful number, since it uses less digits than its factorization.

728049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 984.

The product of its (nonzero) digits is 4032, while the sum is 30.

The square root of 728049 is about 853.2578742678. The cubic root of 728049 is about 89.9608471673.

The spelling of 728049 in words is "seven hundred twenty-eight thousand, forty-nine".