828235709 has 16 divisors (see below), whose sum is σ = 962880000. Its totient is φ = 697721904.

The previous prime is 828235703. The next prime is 828235741. The reversal of 828235709 is 907532828.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-828235709 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 828235709.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (828235703) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 232262 + ... + 235800.

It is an arithmetic number, because the mean of its divisors is an integer number (60180000).

Almost surely, 2^828235709 is an apocalyptic number.

It is an amenable number.

828235709 is a deficient number, since it is larger than the sum of its proper divisors (134644291).

828235709 is a wasteful number, since it uses less digits than its factorization.

828235709 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4112.

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

The square root of 828235709 is about 28779.0845754343. The cubic root of 828235709 is about 939.1132836984.

The spelling of 828235709 in words is "eight hundred twenty-eight million, two hundred thirty-five thousand, seven hundred nine".