728809235 has 32 divisors (see below), whose sum is σ = 1116993024. Its totient is φ = 443232000.

The previous prime is 728809231. The next prime is 728809247. The reversal of 728809235 is 532908827.

It is not a de Polignac number, because 728809235 - 2² = 728809231 is a prime.

It is not an unprimeable number, because it can be changed into a prime (728809231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7301 + ... + 38870.

It is an arithmetic number, because the mean of its divisors is an integer number (34906032).

Almost surely, 2^728809235 is an apocalyptic number.

728809235 is a deficient number, since it is larger than the sum of its proper divisors (388183789).

728809235 is a wasteful number, since it uses less digits than its factorization.

728809235 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46235.

The product of its (nonzero) digits is 241920, while the sum is 44.

The square root of 728809235 is about 26996.4670836760. The cubic root of 728809235 is about 899.9214890361.

The spelling of 728809235 in words is "seven hundred twenty-eight million, eight hundred nine thousand, two hundred thirty-five".