828091 has 8 divisors (see below), whose sum is σ = 915264. Its totient is φ = 742920.

The previous prime is 828071. The next prime is 828101. The reversal of 828091 is 190828.

828091 = 369² + 370² + ... + 374².

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 828091 - 2⁵ = 828059 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (828011) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 460 + ... + 1366.

It is an arithmetic number, because the mean of its divisors is an integer number (114408).

2⁸²⁸⁰⁹¹ is an apocalyptic number.

828091 is a deficient number, since it is larger than the sum of its proper divisors (87173).

828091 is a wasteful number, since it uses less digits than its factorization.

828091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1001.

The product of its (nonzero) digits is 1152, while the sum is 28.

The square root of 828091 is about 909.9950549316. The cubic root of 828091 is about 93.9058586685.

The spelling of 828091 in words is "eight hundred twenty-eight thousand, ninety-one".