728642303 has 2 divisors, whose sum is σ = 728642304. Its totient is φ = 728642302.

The previous prime is 728642297. The next prime is 728642393. The reversal of 728642303 is 303246827.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-728642303 is a prime.

It is a super-2 number, since 2×728642303² = 1061839211442287618, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (728642393) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 364321151 + 364321152.

It is an arithmetic number, because the mean of its divisors is an integer number (364321152).

Almost surely, 2^728642303 is an apocalyptic number.

728642303 is a deficient number, since it is larger than the sum of its proper divisors (1).

728642303 is an equidigital number, since it uses as much as digits as its factorization.

728642303 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48384, while the sum is 35.

The square root of 728642303 is about 26993.3751687335. The cubic root of 728642303 is about 899.8527755064.

The spelling of 728642303 in words is "seven hundred twenty-eight million, six hundred forty-two thousand, three hundred three".