728941 has 2 divisors, whose sum is σ = 728942. Its totient is φ = 728940.

The previous prime is 728929. The next prime is 728947. The reversal of 728941 is 149827.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 715716 + 13225 = 846^2 + 115^2 .

It is an emirp because it is prime and its reverse (149827) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 728941 - 2⁷ = 728813 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (728947) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 364470 + 364471.

It is an arithmetic number, because the mean of its divisors is an integer number (364471).

2⁷²⁸⁹⁴¹ is an apocalyptic number.

It is an amenable number.

728941 is a deficient number, since it is larger than the sum of its proper divisors (1).

728941 is an equidigital number, since it uses as much as digits as its factorization.

728941 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4032, while the sum is 31.

The square root of 728941 is about 853.7804167349. The cubic root of 728941 is about 89.9975719510.

The spelling of 728941 in words is "seven hundred twenty-eight thousand, nine hundred forty-one".