728378033 has 2 divisors, whose sum is σ = 728378034. Its totient is φ = 728378032.

The previous prime is 728377981. The next prime is 728378059. The reversal of 728378033 is 330873827.

728378033 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 can be written as a sum of positive squares in only one way, i.e., 727488784 + 889249 = 26972^2 + 943^2 .

It is a cyclic number.

It is not a de Polignac number, because 728378033 - 2²⁰ = 727329457 is a prime.

It is not a weakly prime, because it can be changed into another prime (728378533) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 364189016 + 364189017.

It is an arithmetic number, because the mean of its divisors is an integer number (364189017).

Almost surely, 2^728378033 is an apocalyptic number.

It is an amenable number.

728378033 is a deficient number, since it is larger than the sum of its proper divisors (1).

728378033 is an equidigital number, since it uses as much as digits as its factorization.

728378033 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 169344, while the sum is 41.

The square root of 728378033 is about 26988.4796348368. The cubic root of 728378033 is about 899.7439736762.

The spelling of 728378033 in words is "seven hundred twenty-eight million, three hundred seventy-eight thousand, thirty-three".