30565130 has 16 divisors (see below), whose sum is σ = 56914920. Its totient is φ = 11804352.

The previous prime is 30565123. The next prime is 30565151. The reversal of 30565130 is 3156503.

It can be written as a sum of positive squares in 4 ways, for example, as 20948929 + 9616201 = 4577^2 + 3101^2 .

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 30565096 and 30565105.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 52409 + ... + 52988.

Almost surely, 2^30565130 is an apocalyptic number.

30565130 is a deficient number, since it is larger than the sum of its proper divisors (26349790).

30565130 is a wasteful number, since it uses less digits than its factorization.

30565130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105433.

The product of its (nonzero) digits is 1350, while the sum is 23.

The square root of 30565130 is about 5528.5739571792. The cubic root of 30565130 is about 312.6622261700.

The spelling of 30565130 in words is "thirty million, five hundred sixty-five thousand, one hundred thirty".