9828390 has 128 divisors (see below), whose sum is σ = 29030400. Its totient is φ = 2096640.

The previous prime is 9828367. The next prime is 9828391. The reversal of 9828390 is 938289.

9828390 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9828391) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 124371 + ... + 124449.

It is an arithmetic number, because the mean of its divisors is an integer number (226800).

Almost surely, 2^9828390 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9828390, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14515200).

9828390 is an abundant number, since it is smaller than the sum of its proper divisors (19202010).

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

9828390 is a wasteful number, since it uses less digits than its factorization.

9828390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142.

The product of its (nonzero) digits is 31104, while the sum is 39.

The square root of 9828390 is about 3135.0263156790. The cubic root of 9828390 is about 214.2039427682.

The spelling of 9828390 in words is "nine million, eight hundred twenty-eight thousand, three hundred ninety".