9730321020 has 180 divisors, whose sum is σ = 35508238920. Its totient is φ = 2224055232.

The previous prime is 9730321001. The next prime is 9730321031. The reversal of 9730321020 is 201230379.

It is a tau number, because it is divible by the number of its divisors (180).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 18091 + ... + 140669.

It is an arithmetic number, because the mean of its divisors is an integer number (197267994).

Almost surely, 2^9730321020 is an apocalyptic number.

9730321020 is a gapful number since it is divisible by the number (90) 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 9730321020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17754119460).

9730321020 is an abundant number, since it is smaller than the sum of its proper divisors (25777917900).

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

9730321020 is a wasteful number, since it uses less digits than its factorization.

9730321020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122614 (or 122596 counting only the distinct ones).

The product of its (nonzero) digits is 2268, while the sum is 27.

The square root of 9730321020 is about 98642.3895695963. The cubic root of 9730321020 is about 2134.8910810690.

Adding to 9730321020 its reverse (201230379), we get a palindrome (9931551399).

The spelling of 9730321020 in words is "nine billion, seven hundred thirty million, three hundred twenty-one thousand, twenty".