728232319 has 2 divisors, whose sum is σ = 728232320. Its totient is φ = 728232318.

The previous prime is 728232317. The next prime is 728232359. The reversal of 728232319 is 913232827.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 728232319 - 2¹ = 728232317 is a prime.

It is a super-2 number, since 2×728232319² = 1060644620872235522, which contains 22 as substring.

Together with 728232317, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (728232317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 364116159 + 364116160.

It is an arithmetic number, because the mean of its divisors is an integer number (364116160).

Almost surely, 2^728232319 is an apocalyptic number.

728232319 is a deficient number, since it is larger than the sum of its proper divisors (1).

728232319 is an equidigital number, since it uses as much as digits as its factorization.

728232319 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 36288, while the sum is 37.

The square root of 728232319 is about 26985.7799405539. The cubic root of 728232319 is about 899.6839709345.

It can be divided in two parts, 7282 and 32319, that added together give a square (39601 = 199²).

The spelling of 728232319 in words is "seven hundred twenty-eight million, two hundred thirty-two thousand, three hundred nineteen".