30320530 has 16 divisors (see below), whose sum is σ = 55079640. Its totient is φ = 12016512.

The previous prime is 30320471. The next prime is 30320531. The reversal of 30320530 is 3502303.

It can be written as a sum of positive squares in 4 ways, for example, as 27112849 + 3207681 = 5207^2 + 1791^2 .

It is not an unprimeable number, because it can be changed into a prime (30320531) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12819 + ... + 14998.

Almost surely, 2^30320530 is an apocalyptic number.

30320530 is a deficient number, since it is larger than the sum of its proper divisors (24759110).

30320530 is a wasteful number, since it uses less digits than its factorization.

30320530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27933.

The product of its (nonzero) digits is 270, while the sum is 16.

The square root of 30320530 is about 5506.4080851314. The cubic root of 30320530 is about 311.8259562400.

Adding to 30320530 its reverse (3502303), we get a palindrome (33822833).

The spelling of 30320530 in words is "thirty million, three hundred twenty thousand, five hundred thirty".