728786323 has 2 divisors, whose sum is σ = 728786324. Its totient is φ = 728786322.

The previous prime is 728786273. The next prime is 728786329. The reversal of 728786323 is 323687827.

728786323 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 728786323 - 2¹³ = 728778131 is a prime.

It is a super-2 number, since 2×728786323² = 1062259009183720658, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (728786329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 364393161 + 364393162.

It is an arithmetic number, because the mean of its divisors is an integer number (364393162).

Almost surely, 2^728786323 is an apocalyptic number.

728786323 is a deficient number, since it is larger than the sum of its proper divisors (1).

728786323 is an equidigital number, since it uses as much as digits as its factorization.

728786323 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 677376, while the sum is 46.

The square root of 728786323 is about 26996.0427285186. The cubic root of 728786323 is about 899.9120584855.

The spelling of 728786323 in words is "seven hundred twenty-eight million, seven hundred eighty-six thousand, three hundred twenty-three".