828229 has 4 divisors (see below), whose sum is σ = 871840. Its totient is φ = 784620.

The previous prime is 828221. The next prime is 828239. The reversal of 828229 is 922828.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 828229 - 2³ = 828221 is a prime.

It is a Duffinian number.

828229 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 828229.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (828221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21777 + ... + 21814.

It is an arithmetic number, because the mean of its divisors is an integer number (217960).

2⁸²⁸²²⁹ is an apocalyptic number.

It is an amenable number.

828229 is a deficient number, since it is larger than the sum of its proper divisors (43611).

828229 is a wasteful number, since it uses less digits than its factorization.

828229 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43610.

The product of its digits is 4608, while the sum is 31.

The square root of 828229 is about 910.0708763607. The cubic root of 828229 is about 93.9110747976.

The spelling of 828229 in words is "eight hundred twenty-eight thousand, two hundred twenty-nine".