728754233 has 2 divisors, whose sum is σ = 728754234. Its totient is φ = 728754232.

The previous prime is 728754227. The next prime is 728754263. The reversal of 728754233 is 332457827.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 623650729 + 105103504 = 24973^2 + 10252^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-728754233 is a prime.

It is not a weakly prime, because it can be changed into another prime (728754263) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 364377116 + 364377117.

It is an arithmetic number, because the mean of its divisors is an integer number (364377117).

Almost surely, 2^728754233 is an apocalyptic number.

It is an amenable number.

728754233 is a deficient number, since it is larger than the sum of its proper divisors (1).

728754233 is an equidigital number, since it uses as much as digits as its factorization.

728754233 is an evil number, because the sum of its binary digits is even.

The product of its digits is 282240, while the sum is 41.

The square root of 728754233 is about 26995.4483756058. The cubic root of 728754233 is about 899.8988499492.

The spelling of 728754233 in words is "seven hundred twenty-eight million, seven hundred fifty-four thousand, two hundred thirty-three".