730020720 has 320 divisors, whose sum is σ = 2699827200. Its totient is φ = 160849920.

The previous prime is 730020701. The next prime is 730020721. The reversal of 730020720 is 27020037.

730020720 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (730020721) 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, 3054361 + ... + 3054599.

It is an arithmetic number, because the mean of its divisors is an integer number (8436960).

Almost surely, 2^730020720 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 730020720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1349913600).

730020720 is an abundant number, since it is smaller than the sum of its proper divisors (1969806480).

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

730020720 is a wasteful number, since it uses less digits than its factorization.

730020720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 368 (or 362 counting only the distinct ones).

The product of its (nonzero) digits is 588, while the sum is 21.

The square root of 730020720 is about 27018.8956102947. The cubic root of 730020720 is about 900.4198534890.

Adding to 730020720 its reverse (27020037), we get a palindrome (757040757).

The spelling of 730020720 in words is "seven hundred thirty million, twenty thousand, seven hundred twenty".