9828021 has 8 divisors (see below), whose sum is σ = 14976064. Its totient is φ = 5616000.

The previous prime is 9828019. The next prime is 9828031. The reversal of 9828021 is 1208289.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 9828021 - 2¹ = 9828019 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 9828021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9828001) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 233980 + ... + 234021.

It is an arithmetic number, because the mean of its divisors is an integer number (1872008).

Almost surely, 2^9828021 is an apocalyptic number.

It is an amenable number.

9828021 is a deficient number, since it is larger than the sum of its proper divisors (5148043).

9828021 is a wasteful number, since it uses less digits than its factorization.

9828021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 468011.

The product of its (nonzero) digits is 2304, while the sum is 30.

The square root of 9828021 is about 3134.9674639460. The cubic root of 9828021 is about 214.2012620224.

The spelling of 9828021 in words is "nine million, eight hundred twenty-eight thousand, twenty-one".