728107243 has 2 divisors, whose sum is σ = 728107244. Its totient is φ = 728107242.

The previous prime is 728107241. The next prime is 728107271. The reversal of 728107243 is 342701827.

728107243 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 728107243 - 2¹ = 728107241 is a prime.

It is a super-2 number, since 2×728107243² = 1060280314618122098, which contains 22 as substring.

Together with 728107241, it forms a pair of twin primes.

It is equal to p_37631716 and since 728107243 and 37631716 have the same sum of digits, it is a Honaker prime.

It is a junction number, because it is equal to n+sod(n) for n = 728107199 and 728107208.

It is not a weakly prime, because it can be changed into another prime (728107241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 364053621 + 364053622.

It is an arithmetic number, because the mean of its divisors is an integer number (364053622).

Almost surely, 2^728107243 is an apocalyptic number.

728107243 is a deficient number, since it is larger than the sum of its proper divisors (1).

728107243 is an equidigital number, since it uses as much as digits as its factorization.

728107243 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18816, while the sum is 34.

The square root of 728107243 is about 26983.4623982913. The cubic root of 728107243 is about 899.6324602135.

The spelling of 728107243 in words is "seven hundred twenty-eight million, one hundred seven thousand, two hundred forty-three".