9780828 has 24 divisors (see below), whose sum is σ = 23027088. Its totient is φ = 3230976.

The previous prime is 9780821. The next prime is 9780829. The reversal of 9780828 is 8280879.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 9780828.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9780821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2251 + ... + 4962.

It is an arithmetic number, because the mean of its divisors is an integer number (959462).

Almost surely, 2^9780828 is an apocalyptic number.

It is an amenable number.

9780828 is an abundant number, since it is smaller than the sum of its proper divisors (13246260).

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

9780828 is a wasteful number, since it uses less digits than its factorization.

9780828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7333 (or 7331 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 42.

The square root of 9780828 is about 3127.4315340228. The cubic root of 9780828 is about 213.8578553527.

The spelling of 9780828 in words is "nine million, seven hundred eighty thousand, eight hundred twenty-eight".