730325520 has 60 divisors (see below), whose sum is σ = 2452678956. Its totient is φ = 194753280.

The previous prime is 730325447. The next prime is 730325521. The reversal of 730325520 is 25523037.

It can be written as a sum of positive squares in 2 ways, for example, as 401120784 + 329204736 = 20028^2 + 18144^2 .

It is a tau number, because it is divible by the number of its divisors (60).

It is not an unprimeable number, because it can be changed into a prime (730325521) 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 11 ways as a sum of consecutive naturals, for example, 506451 + ... + 507890.

Almost surely, 2^730325520 is an apocalyptic number.

It is an amenable number.

730325520 is an abundant number, since it is smaller than the sum of its proper divisors (1722353436).

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

730325520 is a wasteful number, since it uses less digits than its factorization.

730325520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1014360 (or 1014351 counting only the distinct ones).

The product of its (nonzero) digits is 6300, while the sum is 27.

The square root of 730325520 is about 27024.5355186727. The cubic root of 730325520 is about 900.5451512039.

Adding to 730325520 its reverse (25523037), we get a palindrome (755848557).

It can be divided in two parts, 7303 and 25520, that added together give a palindrome (32823).

The spelling of 730325520 in words is "seven hundred thirty million, three hundred twenty-five thousand, five hundred twenty".