728452 has 12 divisors (see below), whose sum is σ = 1281420. Its totient is φ = 362336.

The previous prime is 728437. The next prime is 728471. The reversal of 728452 is 254827.

It can be written as a sum of positive squares in 2 ways, for example, as 430336 + 298116 = 656^2 + 546^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 728452.

It is a congruent number.

It is an unprimeable number.

728452 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 3 ways as a sum of consecutive naturals, for example, 738 + ... + 1414.

It is an arithmetic number, because the mean of its divisors is an integer number (106785).

2⁷²⁸⁴⁵² is an apocalyptic number.

It is an amenable number.

728452 is a deficient number, since it is larger than the sum of its proper divisors (552968).

728452 is a wasteful number, since it uses less digits than its factorization.

728452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 950 (or 948 counting only the distinct ones).

The product of its digits is 4480, while the sum is 28.

The square root of 728452 is about 853.4939952923. The cubic root of 728452 is about 89.9774429066.

The spelling of 728452 in words is "seven hundred twenty-eight thousand, four hundred fifty-two".