828840 has 32 divisors (see below), whose sum is σ = 2486880. Its totient is φ = 220992.

The previous prime is 828833. The next prime is 828859. The reversal of 828840 is 48828.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 828798 and 828807.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3334 + ... + 3573.

It is an arithmetic number, because the mean of its divisors is an integer number (77715).

2⁸²⁸⁸⁴⁰ is an apocalyptic number.

It is an amenable number.

828840 is an abundant number, since it is smaller than the sum of its proper divisors (1658040).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

828840 is a wasteful number, since it uses less digits than its factorization.

828840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6921 (or 6917 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 30.

The square root of 828840 is about 910.4065026130. The cubic root of 828840 is about 93.9341624390.

The spelling of 828840 in words is "eight hundred twenty-eight thousand, eight hundred forty".