728333 has 2 divisors, whose sum is σ = 728334. Its totient is φ = 728332.

The previous prime is 728317. The next prime is 728369. The reversal of 728333 is 333827.

728333 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 499849 + 228484 = 707^2 + 478^2 .

It is a cyclic number.

It is not a de Polignac number, because 728333 - 2⁴ = 728317 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (728303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 364166 + 364167.

It is an arithmetic number, because the mean of its divisors is an integer number (364167).

2⁷²⁸³³³ is an apocalyptic number.

It is an amenable number.

728333 is a deficient number, since it is larger than the sum of its proper divisors (1).

728333 is an equidigital number, since it uses as much as digits as its factorization.

728333 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3024, while the sum is 26.

The square root of 728333 is about 853.4242790078. The cubic root of 728333 is about 89.9725430647.

The spelling of 728333 in words is "seven hundred twenty-eight thousand, three hundred thirty-three".