9789983028 has 324 divisors, whose sum is σ = 31286822112. Its totient is φ = 2667440160.

The previous prime is 9789983003. The next prime is 9789983029. The reversal of 9789983028 is 8203899879.

It is a tau number, because it is divible by the number of its divisors (324).

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9789983029) by changing a digit.

It is a polite number, since it can be written in 107 ways as a sum of consecutive naturals, for example, 29576823 + ... + 29577153.

Almost surely, 2^9789983028 is an apocalyptic number.

9789983028 is a gapful number since it is divisible by the number (98) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9789983028, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15643411056).

9789983028 is an abundant number, since it is smaller than the sum of its proper divisors (21496839084).

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

9789983028 is a wasteful number, since it uses less digits than its factorization.

9789983028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 396 (or 366 counting only the distinct ones).

The product of its (nonzero) digits is 15676416, while the sum is 63.

The square root of 9789983028 is about 98944.3430823612. The cubic root of 9789983028 is about 2139.2455945665.

The spelling of 9789983028 in words is "nine billion, seven hundred eighty-nine million, nine hundred eighty-three thousand, twenty-eight".