828390 has 32 divisors (see below), whose sum is σ = 2029536. Its totient is φ = 216320.

The previous prime is 828383. The next prime is 828397. The reversal of 828390 is 93828.

It is an interprime number because it is at equal distance from previous prime (828383) and next prime (828397).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (828397) by changing a digit.

828390 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

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 15 ways as a sum of consecutive naturals, for example, 1330 + ... + 1850.

It is an arithmetic number, because the mean of its divisors is an integer number (63423).

2⁸²⁸³⁹⁰ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 828390, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1014768).

828390 is an abundant number, since it is smaller than the sum of its proper divisors (1201146).

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

828390 is a wasteful number, since it uses less digits than its factorization.

828390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 584.

The product of its (nonzero) digits is 3456, while the sum is 30.

The square root of 828390 is about 910.1593267115. The cubic root of 828390 is about 93.9171595493.

The spelling of 828390 in words is "eight hundred twenty-eight thousand, three hundred ninety".