828805 has 8 divisors (see below), whose sum is σ = 1037952. Its totient is φ = 634128.

The previous prime is 828797. The next prime is 828809. The reversal of 828805 is 508828.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 828805 - 2³ = 828797 is a prime.

It is a Duffinian number.

It is a plaindrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (828809) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3489 + ... + 3718.

It is an arithmetic number, because the mean of its divisors is an integer number (129744).

2⁸²⁸⁸⁰⁵ is an apocalyptic number.

It is an amenable number.

828805 is a deficient number, since it is larger than the sum of its proper divisors (209147).

828805 is a wasteful number, since it uses less digits than its factorization.

828805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7235.

The product of its (nonzero) digits is 5120, while the sum is 31.

The square root of 828805 is about 910.3872802275. The cubic root of 828805 is about 93.9328402128.

The spelling of 828805 in words is "eight hundred twenty-eight thousand, eight hundred five".