730073520 has 160 divisors (see below), whose sum is σ = 2743395840. Its totient is φ = 176981760.

The previous prime is 730073503. The next prime is 730073527. The reversal of 730073520 is 25370037.

730073520 is a `hidden beast` number, since 7 + 300 + 7 + 352 + 0 = 666.

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

It is not an unprimeable number, because it can be changed into a prime (730073527) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8397 + ... + 39123.

It is an arithmetic number, because the mean of its divisors is an integer number (17146224).

Almost surely, 2^730073520 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 730073520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1371697920).

730073520 is an abundant number, since it is smaller than the sum of its proper divisors (2013322320).

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

730073520 is a wasteful number, since it uses less digits than its factorization.

730073520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30760 (or 30748 counting only the distinct ones).

The product of its (nonzero) digits is 4410, while the sum is 27.

The square root of 730073520 is about 27019.8726865987. The cubic root of 730073520 is about 900.4415611021.

The spelling of 730073520 in words is "seven hundred thirty million, seventy-three thousand, five hundred twenty".