728395 has 4 divisors (see below), whose sum is σ = 874080. Its totient is φ = 582712.

The previous prime is 728383. The next prime is 728417. The reversal of 728395 is 593827.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 728395 - 2⁷ = 728267 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 728395.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 72835 + ... + 72844.

It is an arithmetic number, because the mean of its divisors is an integer number (218520).

2⁷²⁸³⁹⁵ is an apocalyptic number.

728395 is a deficient number, since it is larger than the sum of its proper divisors (145685).

728395 is a wasteful number, since it uses less digits than its factorization.

728395 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145684.

The product of its digits is 15120, while the sum is 34.

The square root of 728395 is about 853.4606024885. The cubic root of 728395 is about 89.9750959901.

It can be divided in two parts, 7 and 28395, that multiplied together give a triangular number (198765 = T₆₃₀).

The spelling of 728395 in words is "seven hundred twenty-eight thousand, three hundred ninety-five".