728458933 has 2 divisors, whose sum is σ = 728458934. Its totient is φ = 728458932.

The previous prime is 728458903. The next prime is 728458943. The reversal of 728458933 is 339854827.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 454457124 + 274001809 = 21318^2 + 16553^2 .

It is a cyclic number.

It is not a de Polignac number, because 728458933 - 2⁹ = 728458421 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (728458903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 364229466 + 364229467.

It is an arithmetic number, because the mean of its divisors is an integer number (364229467).

Almost surely, 2^728458933 is an apocalyptic number.

It is an amenable number.

728458933 is a deficient number, since it is larger than the sum of its proper divisors (1).

728458933 is an equidigital number, since it uses as much as digits as its factorization.

728458933 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1451520, while the sum is 49.

The square root of 728458933 is about 26989.9783808731. The cubic root of 728458933 is about 899.7772835737. Note that the first 3 decimals are identical.

The spelling of 728458933 in words is "seven hundred twenty-eight million, four hundred fifty-eight thousand, nine hundred thirty-three".