30005320 has 16 divisors (see below), whose sum is σ = 67512060. Its totient is φ = 12002112.

The previous prime is 30005309. The next prime is 30005321. The reversal of 30005320 is 2350003.

It can be written as a sum of positive squares in 2 ways, for example, as 29877156 + 128164 = 5466^2 + 358^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 30005320.

It is not an unprimeable number, because it can be changed into a prime (30005321) 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 3 ways as a sum of consecutive naturals, for example, 375027 + ... + 375106.

Almost surely, 2^30005320 is an apocalyptic number.

It is an amenable number.

30005320 is an abundant number, since it is smaller than the sum of its proper divisors (37506740).

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

30005320 is a wasteful number, since it uses less digits than its factorization.

30005320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 750144 (or 750140 counting only the distinct ones).

The product of its (nonzero) digits is 90, while the sum is 13.

The square root of 30005320 is about 5477.7112008575. The cubic root of 30005320 is about 310.7416167064.

Adding to 30005320 its reverse (2350003), we get a palindrome (32355323).

The spelling of 30005320 in words is "thirty million, five thousand, three hundred twenty".